I think were getting a bit off topic now.
Sure someone bought a quad for $400 (albeit not recently I'll bet, unless it was from a buddy, or someone on craigslist who had no idea of it's worth), people probably have bought them for less.
when was the last quad sold here on the board? how much did it sell for?
look at the Studio pre, plenty of people score them for $350 to $400, but if you look in the completed listings on fleabay, most often times they go for $450-$550. Someone got really lucky this past Saturday and scored one for $316.
This dealer does have a known history of qouting very high prices, I think he's playing the wolf to see if someone is dumb enough to buy it. I had to tell him I thought he was smoking crack when he wanted $400 for a H&K Cream Machine.
As far as the dealer asking $750 for the quad, I don't necessarily think he's too high on the price, he's probably at the upper end. He's not like the *** that thinks his used Mark IV is worth $2500 because they're now out of production.
As for quads, there were probably far less produced than the studio, and many think they sound better, therefore you don't see them that often.
Times change and markets fluctuate. there is supply and demand.