eBay as the “Terminator”: Determining User Suspension From Feedback Ratings

Good reputations are won and lost by individuals and companies in various forms on the Internet. eBay has the earliest and most well-known formal ecommerce reputation system and “terminates” members who do not play by the rules. We examine a dataset of 102,035 Not-A-Registered-User (NARU) eBay account feedback ratings from eight different countries. Careful investigation of feedback density over time reveals that threshold values for termination can be detected from feedback history. Several modeling approaches are studied and the Local Polynomial Regression Model (LPRM) is chosen for analysis because it is data driven and no prespecified parametric functional form is assumed. Analyzing US data, we find that large-volume sellers have a higher overall negative feedback compared to those of medium volume sellers. We use the second derivative of the LPRM to explicitly determine the threshold points, that is, the point where a seller's negative feedback increases significantly. These thresholds vary from as much as 18.5 weeks prior to termination (for Medium sellers), to as little as 8.5 weeks (for Large sellers). We find similar results in the other countries. These threshold points provide valuable information for buyers when choosing a seller. Our analysis suggests that eBay's termination policy appears to be correlated to fee revenue.     

My username is IN! The influence of inward vs. outward wandering usernames on judgments of online seller trustworthiness

Previous research showed that words for which the consonant articulation spots wander from the front of the mouth to the back (e.g., EPOK; inward) are preferred over words with the reversed sequence (e.g., EKOP; outward). In the present research, we extended this effect to judgments of online seller trustworthiness and choice of transaction partners. In seven experiments in the context of the online auction market eBay, we show that the mere use of inward compared to outward usernames increases the level of trustworthiness ascribed to online sellers (Experiments 1A, 1B, 2, 4A, 4B) and the likelihood that a seller is chosen for the economic transaction (Experiment 5). As a boundary condition, this effect is reduced when diagnostic information about the seller's reputation is introduced (Experiment 3). We discuss these results in terms of their practical implications for marketing strategies of online sellers and in terms of their relation to research on interpersonal trust.     

Online Auction Fraud: Ethical Perspective

Internet fraud is an issue that increasingly concerns regulators, consumers, firms, and business ethics researchers. In this article, we examine one common form of internet fraud, the practice of shill bidding (when a seller in an auction enters a bid on his or her own item). The significant incidence of shill bidding on eBay (in spite of the fact that it is illegal just as it is in live auctions) exemplifies the current ineffectiveness of regulatory means as well as the lack of effective societal mechanisms to prevent online fraud. Further, the proliferation of shill bidding along with other types of internet fraud may have broader implications. If unethical behavior such as shill bidding becomes too widespread on the internet, regulators and other societal forces may deem it necessary to institute controls that will impact the entire online marketplace as well as the future development and regulation of business activities on the internet. Our results indicate that shill bidding is perpetrated on eBay significantly more often than 0.1% rate of fraud estimated by the firm. This suggests that regulators, users, and others stakeholders may become concerned enough to act. The impact of those responses on the internet of the future may affect a broad array of users beyond the unethical sellers on eBay. Alex Nikitkov is an Assistant Professor of Accounting at Brock University in St. Catharines, Ontario, Canada Darlene Bay is an Assistant Professor of Accounting at Brock University in St. Catharines, Ontario, Canada     

Does It Pay to Promote on eBay?

Promotional upgrades to auction listings are now a ubiquitous feature of auction Web sites. We examine 705 auctions of a single consumer-electronic product on eBay and test whether use of various promotions results in a greater probability of sale or a higher realized price. We find that promotions that focus on display enhancements, such as border, bold, or highlight, are not worth the cost. However, the subtitle promotional tool is effective and worth the cost. We also find interesting results regarding seller reputation: although seller reputation does not increase the probability of a sale overall, it can result in higher realized price if a reputable seller is selected. Implications for promoting on eBay are discussed.     

Effect of Reputation Mechanisms and Ratings Biases on Traders’ Behavior in Online Marketplaces

Rating mechanisms are becoming an essential tool for online shoppers. There have been many reputation mechanisms proposed in the literature that try to mitigate the sometimes adverse effects of strategic behavior of the traders to alter their true reputation scores. At the same time, several studies have shown the presence of bias (often unintentional) in product ratings and their harmful effect on buyers and product sales. To date, there has not been any work done that studies the effect of reputation mechanisms and ratings biases on the behavior of buyers and sellers in an online marketplace. In this article, we use the concept of replicator dynamics to study the evolution of different types of sellers and buyers who use three different reputation mechanisms. We also study the evolution of different types of sellers in the presence of four types of ratings biases. Our results indicate that, over time, buyers gravitate toward using the adaptive model and, in most scenarios, strategic and dishonest sellers are replaced by honest sellers.     

Strategic compliments in sales

Salespersons often spend time and money giving prospective buyers compliments such as kind words, meals and gifts. Though prior research has shown that compliments will influence a prospective buyer’s decision, it is unknown the extent to which salespersons should make these investments. In this paper, we develop an analytical model to examine how seller and buyer characteristics affect the equilibrium provision of compliments by the seller. We establish that the optimal magnitude of compliments is non-monotonic in the buyer’s sensitivity to compliments. We identify conditions for when a seller of a high-quality product will offer greater (or lesser) compliments than a seller of a lower quality product. We show that, under certain conditions, an uninformed buyer earns greater utility than a buyer who knows the quality of the seller’s product. The findings have implications for sellers in their choice of compliments and buyers in the inferences they draw from the compliments received.     

The influence of seller strategy on the winning price in online auctions: A moderated mediation model

This paper examines the impact of seller strategy on winning prices in online auctions. In our conceptual model, three strategic choices made by the seller - minimum opening price, auction length, and use of a hidden reserve price - are mediated by the number of bids placed during the auction and moderated by product type. Our tests analyze eBay auction data for four consumer products through two matched studies (two products per study). In particular, we compare products for which value is easily determined with those for which value is less clear. Overall, we find strong evidence of the effects of minimum opening price and hidden reserve prices on final winning prices. The impact of auction length on winning price is less clear. In general, our tests support the idea that potential buyers rely more on signals such as opening price and reserve price for products for which reference prices are less available.     

The Transaction Cost Economics of Market‐based Exchange: The Impact of Reputation and External Verification Agencies

In this analysis, we empirically investigate market‐based transaction costs. We measure market‐based transaction costs indirectly by examining variations in market prices when selling Morgan Silver Dollars on eBay. We find that the reputation of both the seller and the coin‐rating agency employed significantly influences the price premium obtained. Moreover, we find that the use of a coin‐rating agency with a poor reputation proved more damaging than the use of no coin‐rating agency. Thus, we find support for the suggestion that the reputation of sellers and third‐party verification agencies have a significant influence on perceived market‐based transaction costs.     

Winning the new channel war on Amazon and third-party platforms

The top online marketplaces in the world, including Alibaba, Amazon, and eBay, sold $2.7 trillion in 2020, or 62% of global web sales that year. Despite the promise of unfettered access to customers, the reality is that most sellers struggle with unprecedented and unauthorized rogue resellers. These often anonymous, third-party individuals and firms may not provide the quality experiences aligned with customers’ expectations of a brand and often market their goods in competition with trusted partners. This requires a systematic battle plan to effectively protect the seller’s brand equity, service promise, and authorized distribution network. We describe the channel war that is at work and the forces fueling its development. We explain how rogue reseller activities drive down pricing, increase channel competition and conflict, impact the customer experience, and harm brand equity. We recommend revising product policies, procedures, and agreements to begin to differentiate products from those sold by unauthorized parties. We also recommend a legal strategy to complement these efforts. Critical steps include regular and active enforcement as well as implementing services, benefits, and quality controls for the brand’s products that cannot be replicated by unauthorized sellers and requiring authorized distributors and retailers to maintain those benefits and controls.     

Your Call: eBay and Demand for the iPhone 4☆

The iPhone 4 was introduced into the UK market on 24^th June 2010 to significant consumer interest. Demand revealed itself exceeding supply through conventional channels, since there was very extensive activity in terms of bidding on eBay auctions for the product. We monitored all UK eBay transactions on the iPhone 4 for six weeks from introduction, with total transactions amounting to around £1.5m. We analyse determinants of winning bids in terms of characteristics of the phone, the seller, and the buyer. Our most notable and novel finding relative to previous studies is a very significant premium over list price being paid in almost all cases, with positive uplift factors including whether the phone was unlocked and whether it could be sold overseas. Demand fell over time, as evidenced by lower achieved prices, but the fall in price was relatively modest. A significant premium of 32GB over 16GB versions is revealed.     

There is nothing permanent except change—analyzing individual price dynamics in “pay-what-you-want” situations

This study is examines the dynamics in prices paid in “pay-what-you-want” situations over multiple customer–seller transactions on an individual customer level. The analysis of potential dynamism in prices paid allows for an assessment of the profitability of pay-what-you-want pricing for sellers of frequently bought products and services. To empirically validate the framework, the authors conduct a field study that focuses on the aggregate and individual dynamics in prices paid over customers’ multiple purchases. Using latent growth modeling, the authors find significant but declining decreases in prices paid. Further, they identify stable individual and relational difference factors which predict steeper or more gradual declines in prices paid. Customers’ individual preferences for fairness and price consciousness as well as their overall satisfaction with the seller alleviate price declines. The authors discuss the practical and theoretical implications of these findings.     

Understanding product migration to the electronic marketplace: A conceptual framework

We present a conceptual framework that organizes current thinking regarding increased interactivity in the electronic marketplace and its implications for product migration. Product migration refers to the extent of reliance by buyers and sellers on the electronic marketplace for activities pertaining to information search, purchase, acquisition, use, and disposal of a product. We posit that value outcomes derived by buyers and sellers from increasing interactivity mediate the relationship between interactivity and product migration. The relationship between interactivity and value outcomes for buyers and sellers is moderated by three sets of product-related characteristics: the core characteristics of the product, its purchase and use-related characteristics, and market characteristics. Inertia and resistance exhibited by buyers and sellers negatively impact product migration to the electronic marketplace and also attenuate the impact of value outcomes on product migration. In addition to guiding theoretical and empirical work in this emerging area, the proposed framework can also be employed to structure a firm's strategic discussions related to the electronic marketplace.     

Maximizing earnings and price fairness perceptions in online consumer-to-consumer auctions

We examine the effects of starting bids on seller earnings in online consumer-to-consumer auctions. As starting bids increase, and the number of bidders increase, seller earnings increase. Both the affiliated private value model and a reference price explanation explain seller earnings. Bidder price fairness perceptions are also evaluated and, higher starting bids positively impact price fairness perceptions for winning bidders but have an adverse effect on losing bidders. In total, these findings suggest that sellers receive greater earnings as well as no adverse price fairness perceptions from winning bidders by setting starting bids higher.     

Quality,Choice, and the Economics of Concealment: The Marketing of Lemons

The quantity of hazardous or ineffective products on national and international markets is higher than can be explained by current theory. Research has shown that “lemons” can indeed occur and it has specified roles for (a) potential future purchases and (b) seller reputation. This paper explores incentives facing sellers of goods containing one or more negative characteristics. The economics of concealment provides the conditions under which some sellers use resources to interfere with quality signals. This allows, at the extreme, a class of product which is a “pure lemon” in that its very existence would not be justified if consumers were fully informed. The paper identifies important variables which have direct policy implications for regulation and for consumer welfare.     

Relationship Value in Thai Business-to-Business Marketing

This study focuses on value in the business-to-business relationship among buyers and sellers. Relationship value has long been one of the key research areas in marketing for business to business. By examining from the perspective of the buyers, this research identifies how business buyers can use marketing benefits, product benefits, technical benefits, logistics benefits, financial benefits, risk-reduction benefits, information benefits, and strategic benefits to predict buyer–seller relationship. The study confirms significant relationships among marketing benefits, product benefits, and value in retailer–supplier relationship. The analysis from this study supports that benefit in a business-to-business relationship can be created if suppliers work on mutual benefits with customers. The results also confirm that Thai business customers will look for business partners who can provide risk reduction and marketing benefits for their business.     

Online Shoppers' Perceptions and Use of Comparison-Shopping Sites: An Exploratory Study

Comparison-shopping sites currently offer online shoppers various combinations of free services such as price comparisons, merchant ratings, links to e-tailers’ websites, and/or customer reviews in the search results page(s). The utility and market values of shopping comparison sites have attracted Internet giants such as eBay, Google, and Yahoo to the extent of developing or acquiring such sites. Scholarly research on comparison-shopping sites has focused on (1) trust in online recommendation agents, and (2) methods used by electronic agents to produce the recommendations. Our study explored how online shoppers’ attitudes toward comparison-shopping sites impact perceived credibility and usefulness of these sites. We also examined online shoppers’ merchant selection criteria and their likelihood to continue using comparison-shopping sites. One interesting finding from our study was that merchants need to be strong on site ratings and brand awareness to appeal to a wide online market. The finding dispelled the notion that e-tailers presented by shopping comparison sites need to compete, basically, only on price.     

e-Honesty: when does it pay?

We consider a model of strategic reputation for online sales using an exchange format. In the model sellers can sell a cheap good to build up reputation, and then cheat when selling a more expensive good. We identify conditions under which a seller will always be honest.     

Efficiency Considerations in Online Auction Markets

The main contention of this article is that online auction markets are amenable to efficiency considerations akin to traditional financial markets. While the underlying assets traded are dissimilar between the financial and online auction markets, the fundamental principles that drive these markets are consanguineous in that similar efficiency notions are applicable. Based on the principles of arbitrage, we develop a set of efficiency criteria to evaluate the auction activity of new and identically described items. Two arbitrage principles, seller arbitrage and buyer arbitrage, are developed. These principles can be employed to evaluate the price behavior of temporally proximate auctions and to generate a useful benchmark to make efficiency evaluations. We find evidence of inefficiency for each of the items we empirically tested based on the data from eBay, currently the largest online auction house.     

The Role of Perceived Product Importance in Organizational Busyer-Seller Relationships

The focus of industrial marketing is shifting toward buyer-seller partnership and greater emphasis is being placed on nurturing these relationships. Partnerships imply intensive ties and complex interaction processes between buyers and sellers. This paper focuses on the affect that perceived product importance has on the complexity of partnership interaction processes. The findings indicate the perceived product importance leads to high levels of cooperation, information exchange and social exchange, in addition to extensive interoranganizational networks involving many functional areas and hierarchical levels. On the other hand, in the industry studied, it did not lead to a mutual commitment of resources. The seller made substantial investments in the relationships with their customers, whereas, in general, the buyers were not perceived as having done so     

Collaborative orientation to advance value co-creation in buyer–seller relationships

This study extends the theory of value co-creation by investigating how collaborative orientation advances value co-creation drivers that benefit both buyers and sellers in competitive markets. With direct field research, conducted in a real-life context, the authors interviewed (using a mirrored, semi-structured protocol) buyer–seller respondents at multiple levels in 1 seller and 10 buyer firms. Ten cases developed from these data reflect how buyers and sellers develop value and share resources to advance value co-creation during a formal buyer–seller relationship effort. Our findings suggest four propositions and identify four drivers that may advance value co-creation in buyer–seller relationships: (a) mutual understanding of industry problems through continuous interactions during the relationship period; (b) ability to develop and leverage knowledge and resources; (c) share asset-specific investments; and (d) shared long-term goals. This article extends previous resource-based models and provides novel insights into value co-creation.