My advice is to check EBay and you could end up with an awesome deal. I picked up Drummania 1 with the official drum base (no stand, drum sticks or pedal) for $41 shipped a while ago.
I haven't seen any deals on the controller or games but if you are just looking for it regardless of a good deal or not, NCSX.com and Play Asia both are reliable. NCSX will probably be less on shipping though since they are in NY I think while Play Asia is Hong Kong and the controller will probably cost a lot to ship overseas.