10,000 miles looks alot for 06 i know that most yamahas are very reliable i have a rxs100 had for 4 years and only replaced the spark plug but its an old 1991, prefer old ones as they are not restricted as much as new bikes the price seems average for this type of year i think
hope this helps
ok, try and negotiate with them (bit cheaper) convince them that you will look after it people then feel more comfortable selling it then.