7900 Tysons One Place
McLean, VA 22102
Institutional Affiliation: Columbia University
NBER Working Papers and Publications
|November 2019||The Impact of E-Commerce on Relative Prices and Consumer Welfare|
with Yoon J. Jo, David E. Weinstein: w26506
This paper examines the impact of e-commerce on pricing behavior and welfare. Using Japanese data, we find that the entry of e-commerce firms significantly raised the rate of intercity price convergence for goods sold intensively online, but not for other goods. E-commerce also lowered relative inflation rates for goods sold intensively online. We overcome data challenges using long data series and historical catalog sales as an instrument for e-commerce sales intensity. We estimate that reductions in price dispersion raised welfare by 0.3 percent. E-commerce also lowered variety-adjusted prices on average by 0.9 percent, and more in cities with highly educated populations.