What does this research mean for the field?

Participation in the Fulfilment by Amazon (FBA) program significantly enhances third-party sellers' reputations, with medium-sized sellers experiencing the greatest benefit. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To assess the effect of utilizing Amazon's platform fulfilment service on third-party seller reputation as measured by customer star ratings.

August 28, 2026Journal of Agricultural Economics

Platform Fulfilment and Seller Reputation: Evidence From Amazon's Marketplace

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Authors

CEChinonso Etumnu KFKenneth A. Foster

Discussion

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Overview

Econometric panel analysis demonstrates that platform fulfilment improves seller star ratings across third-party merchants, highlighting optimal reputation gains for medium-sized sellers.

Key Points

To assess the effect of utilizing Amazon's platform fulfilment service on third-party seller reputation as measured by customer star ratings.
Analyzed 26 weeks of panel data covering third-party marketplace sellers across Canada, the United Kingdom, and the United States.
Applied fixed effects and staggered difference-in-differences estimation strategies to evaluate changes in seller star ratings following program adoption.
Platform fulfilment usage was significantly and positively associated with seller star ratings, yielding stronger gains in the short term than in the long term.
Positive associations appeared across all three countries, with cross-country heterogeneity showing the largest effect sizes in Canada.
While large sellers maintained the highest baseline ratings overall, medium-sized sellers achieved the greatest relative reputation gains from joining the program.

Cite This Study

Etumnu et al. (2026) studied this question.

synapsesocial.com/papers/6a914642d15324a1df3a9baf https://doi.org/10.1111/1477-9552.70075

View Full Paper

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August 28, 2026Journal of Agricultural Economics

Platform Fulfilment and Seller Reputation: Evidence From Amazon's Marketplace

View Full Paper

Ask AI

Bookmark

Authors

CEChinonso Etumnu KFKenneth A. Foster

Discussion

Member takes

Overview

Econometric panel analysis demonstrates that platform fulfilment improves seller star ratings across third-party merchants, highlighting optimal reputation gains for medium-sized sellers.

Key Points

To assess the effect of utilizing Amazon's platform fulfilment service on third-party seller reputation as measured by customer star ratings.
Analyzed 26 weeks of panel data covering third-party marketplace sellers across Canada, the United Kingdom, and the United States.
Applied fixed effects and staggered difference-in-differences estimation strategies to evaluate changes in seller star ratings following program adoption.
Platform fulfilment usage was significantly and positively associated with seller star ratings, yielding stronger gains in the short term than in the long term.
Positive associations appeared across all three countries, with cross-country heterogeneity showing the largest effect sizes in Canada.
While large sellers maintained the highest baseline ratings overall, medium-sized sellers achieved the greatest relative reputation gains from joining the program.

Cite This Study

Etumnu et al. (2026) studied this question.

synapsesocial.com/papers/6a914642d15324a1df3a9baf https://doi.org/10.1111/1477-9552.70075

View Full Paper

Ask AI

Bookmark