I can't find the case file online and the details in the article are sketchy. There have been cases where used books, worth less than $100, were being sold for

I can't find the case file online and the details in the article are sketchy. There have been cases where used books, worth less than $100, were being sold for over $23 million because two sellers are using the same automated pricing strategy which was to price 10% higher than the lowest price [1]. The software just kept moving the price up since they were the only two sellers. My guess is that there was evidence of collusion in this case. It's the conspiring to fix prices that's the problem. Still, the feds coming down on the little guy seems silly. 1 - http://www.pcmag.com/article2/0,2817,2384102,00.asp http://www.pcmag.com/article2/0,2817,2384102,00.asp