had a 2002 txt pro 250, ok it was a mint hardly used bike when i got it, i changed the airbox tube, upped the rear spring and played with the forks & it was great, it never missed a beat, the clutch was still the nicest of any trialy i've ridden (several).
I've got a 2015 now which cost 3 times as much, is it 3 times better, no way!
at my level, theres nothing I can do on my 2015 that I couldn't do on my 2002
great bike (despite what some say) go for it if its tidy