Very interesting thread - with most works bikes you would not be buying them as you would a normal bike to ride around the paddock, you would be buying them to appreciate the hand built one off engineering features that they have, and the race history and heritage that comes with them. Did anyone have a good look at that 1981 Kawasaki SR250 on display at Classic Dirt last year - it was a work of art, from its one off weird shape fibreglass tank, sandcast engine and machined hubs, gold anodised billet everything, and super trick shock - I could only find about four insignificant items from my 1981 KX250 that would have fitted on it. Therefor it is like art, why do people pay ridiculous money for art, or classic cars. Therefore works bikes have no price, they are literally priceless - they are worth what anyone wants to pay. I agree that compared to road race works bikes - MX works bikes at 20k to 30k are cheap and will continue to go up over time. Life is not a rehearsal - if you want it and have the once in a lifetime chance to buy it and enjoy it - and can afford it - grab it.