Located in Locust Valley, New York is a track prepped 2000 Aprilia RS250. This bike has Marchesini wheels, Arrow exhaust, and Attack rear sets. The bike hasn't been raced, only used for track days and does show some scratches from being down. See the eBay ad here.
EDIT: This bike failed to sell or receive any bids with a starting price of $4,500 on 07/08/09.