Originally Posted by disston
Start at 2K but go as high as 3K. If he wants more maybe more invasive investigation can help settle the question. Things in doubt are the condition of gas tank, not the paint but rust inside from sitting with gas in it. Condition of front brake master cylinder and calipers, brake fluid attracts water corrodes inside parts. Was engine fogged when it was first stored. Things of this sort can be bargaining points.
Look in the gas tank. Any amount of gas stored in this tank for 10 years is a bad sign.
Offer 1500 and assume the worst - PO put the bike up due to a scare (throttle stuck). 10 year old gas in tank looks like it was covered what kind of climate do you live high humidity?? I doubt the engine was fogged on any other steps were taken for long term storage. That all being considered a great looking bike you are indeed lucky to have first shot at that bike!!!