For less than $100,000 on eBay, you could land a BMW 3.0 CS/CSL Group 2 racing coupe, which "began life in 1968 as a 1969 BMW 2800 CS where it served for five-months as a BMW test car." Auction page. Click here for first picture in gallery.
It then spent close to 40-years kicking around various race circuits. Notable stops include 1977 when it was painted lime green and raced in Group 2 competition, after which someone painted our hero orange.[via Autoblog - eBay]
