sorry I have to join in. An early 80s 531 trek is a really nice bike and yeah they don't fetch the same amounts and vintage italian steel, but at the time they were recognised and an affordable high end bike. Trek's early market was aimed at sport touring and I think that was a pretty unique. Their build quality was recognised as being superb and they were true made in America bikes by a small manufacturer with talented builders. Luker's price estimates are on the money though.