Hi,
I bought one in 2010, used it for my tests, passed tests and bought an XJ6.
I still have the YBR as its such a great wee bike for short trips.
Mechanicly sound, nice to ride, I found it more comfortable than honda CG.
I agree with Siblo about doing the checks, I've spilled mine twice (both times on ice), having said that, they crash well if you drop or low side.
The exhaust must be near to blowing as it is 5 year old, I'm considering putting a stainless on when it does.