Dude, the Supra (MKIV) is actually one of my favourite all time cars, I fucking love them. But your prices are WAYYYY OFF, and those cars are way overpriced, it's ridiculous to pay 50k for a 10 year old car, shit even Ferrari's don't hold that much resale value.
That and also Toyota has fucked up royally by not following up with an updated model, the Supra ran it's course in America in 1998 (2002 in Japan) and there is still no replcament... every other car manufacturer has moved on, Mazda came out with the RX-8, there was some new Eclipse's on the market a few years back...where the fuck is the new Supra !?!