Manifest is a great place to buy CDs. Why support national chains when you can spend your money at a local place that has a cooler vibe and a better selection than any chain store?
I'm not a hard-core comparison shopper, but I feel that their prices are pretty good. I know that when I recently went to buy In Rainbows, they had it for a buck less than that place that aparently sells walls. Also, I'm always sketched about the wall store--do they still censor their CDs? The fact that they ever did is enough to keep me from shopping there.