I am saying the prices where lower then they are now. When Amazon had a almost all the market share they were able to bully the publishers to the pricing they wanted. When Apple entered the market publishers stood strong and got together and got Apple to the prices on there ebook store.

Amazon then was forced to raise there prices if they wanted to get the same books that Apple got. So yes as the market has grown and there are more choices the prices have gone up. The publishing industry conspired with each other to get hire prices.