Around 15 but at a independent store here in Seattle that has a huge used section.
I think like three or so were new and the rest were used. I spent around $100.
Also I like actually having the actual CD. Call me stupid, old fashioned, whatever but I like collecting music (CDs, tapes, vinyl,etc.) If I download a CD and I like it I usually go and buy it too (always with independent/non major artists.)