Get a good look at the rear shock, particularly if it's hard to access that can give a good window as to if the owner has cared for it beyond paying a Polish guy to wipe over the visible bits.

Few hundred quid no test ride, who cares....... 10K?....... I'd at least want a pillion ride that works up and down the box more than once, that's a lot of money to ride it off in to the sunset and find it jumps out of 2nd.