Someplace these should be remaindered, like books, or at least available at a lower price.
Used CDs are quite the bargain.
Most people buy things for 1 song, once the song is off the top 40 or they're sick of it, they trade in their CDs for cash or trade value. Sometimes individuals get themselves in dire straits and have to sell off huge chunks of their collections at once. Either way, a deal is to be had if you are willing to look into it. Most independent music stores also guarantee their used CDs. Before you buy a used CD, make sure the CD and artwork are from the same album.