DE Nichols· Registered
I was all for the K until you mentioned high miles and high price considering. Hmmm...I have heard that Chinese bikes will give you 300 worry-free miles. Not sure if this is an exaggeration, but I would also take the K first, although as others have said a) It sounds like this guy is asking too much for that many miles on the odd, and b) you have not said what kind of riding you really wish to do. There may be another option that would suit you better.
...if it was only an either or, with all the issues I saw with my sister-in-law buying 3 Chinese scooters, all of which barely survived their first "service" - everyone in town refused to work on them.
They were brand new! Took her a year or 2 to find service enough for them to get rid of them all.
They usually say buy cheap and buy twice, but thrice? Oi ve.
All that said, it seems to me if you can't get the K owner to come down, it could be that neither bike would be right and you can always be patient and look for a 3rd bike, used, better quality and not so many miles.