I came across 100+ CDs in March from what looked like a moving clean out and sent them all to musicmagpie.com. Lowest I got for a CD was .50 and the highest I got was 4.50. Ended up with $131.21 and just sent out another box for $75.46. Only problem with musicmagpie is that it took nearly a month to get the check (I wasn't really in a rush just got a little nervous since I never dealt with them).

@ PTS .. be careful on buying at auctions. They don't take any BMG Music Club CDs or basically anything without a UPC or any promo stamped CDs, although I did throw in a few that had promotional cuts on the side and holes in the barcode and still got my full check.