$38k? 'e's 'avin' a giraffe!
Actually, and all else aside, a 'cooking' 635CSi can be advertised at up to GBP 25k in the UK, so that's $50k here. Extremely unlikely to sell at that price, I feel, but maybe indicative of the way the market may be looking?
Typically, selling prices for a good 'un are more likely to be around GBP 6-12k. I paid GBP 7k for my M635CSI, and sold it for the same, but that was many years ago.