I highly favor eBay stores - obviously no unique things like rad vintage frames or nos campy track pedals, but there are good deals to be had reliably there, many cheap parts. ive picked up a couple $9-10 seatposts, $10 pedals, one store/seller had B123's for $40 IIRC. Sometimes its kind of nice to get a good deal and not have to stress about bidding.
Not knocking bidding though... I just picked up a sweet Bullseye front hub for $10, nd have bought plenty of other stuff.