I bought my Brompton in 2005 new for $750 and sold last year for $950. Not bad... you don't see too many bikes the value goes up like Brompton. If you have a MK I, last time I saw on ebay some sold it for more than $10K. It is like collectible items now. Right now I have ~15 Brompton bikes.
Last edited by Brompton_X; 10-09-17 at 04:33 PM.