Try the Zip Code search under Audiogon. You can find used items in your area, and go test them out before you buy. Craig's List (at least in my area) is really good for this too. I bought my speakers and subwoofer off CL. I got my pre and amp from a neighbor who said "it was broken". $0.39 fuse later and I was thumping away (she was pissed).
Terry