Chinonso Ezenwa Etumnu

• Doctor of Philosophy
• Assistant Professor at Kentucky State University

This study examines the relationship between grocery stockouts and sales performance on Amazon's marketplaces in five countries—Canada, France, Germany, the United Kingdom, and the United States. Using a dataset that comprises more than 290,000 distinct grocery products, we find that Amazon has higher sales and lower stockout rates than its third-p...

This study evaluates the effectiveness of Amazon's Subscribe and Save program using panel grocery data from Canada and the United States and fixed effects regressions. Our findings indicate a strong negative correlation between Subscribe and Save eligibility and sales ranks, suggesting that the program significantly enhances grocery sales performan...

How do firms respond to regulatory allegations? The monopolist lawsuit by the Federal Trade Commission (FTC) against Amazon provides an avenue to answer this question. Applying difference-indifferences to panel data of ground coffee products from Amazon's marketplace in the United States and Canada, we find that Fulfillment by Amazon (FBA) fees wer...

In Amazon's marketplaces across the globe, multiple sellers sell the same product, leading Amazon to introduce BuyBox. This box‐like feature, located on the top‐right corner of product pages, prominently displays a single seller at a given time. Using a choice model and a panel dataset of over 290,000 unique grocery products from five countries, ou...

This study uses novel data to estimate the price and sales rank premium for Starbucks ground coffee on Amazon.com and compares this premium with that of other major ground coffee brands. We find that the price premium for Starbucks ground coffee is 13%-42%, which is higher than the price premium for Dunkin' Donuts, Folgers, and Lavazza brands. We a...

Extreme weather events have cost lives and financial losses across the United States. Moreover, they are expected to increase in frequency, and this will exacerbate their impact on vulnerable sectors such as agriculture. But how farmers could adapt to extreme weather events by adopting different conservation practices has received slight attention...

Although the economic success of Amazon Prime has been widely reported in the mass media, few empirical studies have carefully quantified the economic value, consumer welfare impacts, or public policy implications of the subscription program. This study contributes to this economic literature by estimating the effect of the Amazon Prime status of b...

The study analyzed demand for fish in the United States by the number of species purchased from a basket of species, rather than the usual approach focusing on one single species. The basket includes largemouth bass, hybrid striped bass, bluegill, walleye, yellow perch, rainbow trout, Great Lakes whitefish, lake trout, barramundi, and tilapia. Thes...

U.S. per capita seafood consumption is historically high due to population and income growth and consumer preference shifts toward healthy protein options. Despite this expansion, U.S. fisheries, especially those in the Great Lakes region, no longer fulfill domestic demand due to pressure on fish stocks and regulatory constraints. Instead, aquacult...

A recent study (Gil et. al., 2020) found that free shipping can hurt an online retailer if their optimal strategy is to charge shipping fees. But does this observation apply to Amazon? To ascertain this, I estimate the effect of free shipping on grocery sales using data from Amazon Canada. I find that freely shipped products receive more sales on a...

To assess the performance of third‐party sellers relative to Amazon, this study estimates the effect of different sales strategies on Amazon's reported best sellers rank (BSR) of ground coffee in the USA and Canada and red wine in the United Kingdom using a fixed‐effects model. The products are either ‘sold and shipped by Amazon’ (Amazon), ‘sold by...

Extreme weather events have cost lives and financial losses across the United States. Moreover, they are expected to increase in frequency, and this will exacerbate their impact on vulnerable sectors such as agriculture. But how farmers could adapt to extreme weather events by adopting different conservation practices has received slight attention...

Understanding the distribution of online consumer ratings for food products can provide insights that aid supply chain decisions. Using a researcher‐collected web‐scraped panel data set from Amazon, this article quantifies the effect of number of ratings, average rating, variance of ratings, and skewness of the rating distribution. Results show tha...

This paper examines the prioritization of management factors by farmers that lead to the success of their farm business. The research also examines the heterogeneity of producer prioritization of different success strategies. Using a hierarchical clustering approach, we found that each farmer group prioritizes either managing costs, managing output...

This paper examines the prioritization of management factors by farmers that lead to the success of their farm business. The research also examines the heterogeneity of producer prioritization of different success strategies. Using a hierarchical clustering approach, we found that each farmer group prioritizes either managing costs, managing output...

This paper investigates the contribution of the agriculture sector to economic growth in Nigeria using the growth accounting framework and time series data from 1960 to 2011. We find that the agriculture sector has contributed positively and consistently to economic growth in Nigeria, reaffirming the sector"s importance in the economy. The contribu...