http://www.amazon.com/gp/offer-listing/B0041HROGG/ref=dp_olp_used?ie=UTF8&m=A2L77EE7U53NWQ&qid=1323366726&sr=1-2&condition=used
The redesigned silver Xbox 360 Controller for $32.49, always wanted one myself.
WARNING: looks like it's missing the rechargeable battery