Me Dad bought one a few months ago from ebay (BIIIGG mistake!) was cheap though.
Had a quick ride on it before was completely stripped and to me was great, even with bald tyres, solid suspension and completly knackered everything else!
Should be rebuilt in a few months I hope. From what ive seen at a few club trials, it is possible to use them in very difficult sections, and I love the looks on peoples faces when someone on a grubby but well loved twin beats thier brand new computerised kit. Maybe on day I can do the same. . . in the novice class of course. . .
Just my tuppence worth, Pete.