I recently got my Super Street Fighter 2 Turbo for PS, brand new sealed for only 30 bucks. Not too bad in my opinion.

Rastan for SMS, $9.00 complete. Maybe it's a touch high; I don't care. I loved that game in the arcades and I want it.
Heh, i found Rastan two weeks ago at a flea market for 2 bucks, and it was complete.