Has the internet eliminated regional price differences?
We study the effects of the Internet on regional price differences. Comparing two Dutch regions, we find that before the rise of the Internet, price differences of used cars between those regions amounted to some 11–15%, controlling for mileage, age, fuel type and engine volume. These price differences have completely disappeared after the rise of the Internet, in particular a website that allows consumers to make detailed comparisons between almost all used cars for sale in the Netherlands.
Source: “Has the Internet Eliminated Regional Price Differences? Evidence from the Used Car Market” from De Economist, Volume 158, Number 4, 373-386