Yeah man. The Wood stuff is tight. The roadracer that I clipped is not cheap though, I think the complete bike was around $20k, probably 10-12 years ago.
I used to be a little intimidated by those Rotax engines, seemed like they were kind of complex, and required regular and frequent maintenance, which included top end work. Turns out they're fairly mundane when compared to the new 450 motors, which really are complex. Especially if you "tune" them to get higher HP/torque.
That's probably the best argument for keeping the two strokes around, any mildly capable dad like me could do most of the work himself, sometimes at the track. Don't think you'll see too many dads doing a top end for junior on one of the new 450s on Saturday night.
FR