Einav et al. (2012) found that people who live in high sales tax areas were much more likely than other consumers to purchase over the internet, where they were generally exempt from the sales tax if the firm was located in another state. they found that a one percentage point increase in a state's sales tax increases online purchases by state residents by just under 2%. is the explanation for this result similar to that in the challenge solution? why or why not? in the challenge solution, americans and germans are both assumed to be indifferent between traditional books and electronic books, but americans consume lots of electronic books while germans consume virtually none because the after-tax price of electronic books is less than the after-tax price of traditional books in the u. s., but in germany, the after-tax price of traditional books is less. that a one percentage point increase in a state's sales tax would increase online purchases by less than 2% is due to a