I'm not gonna pretend I know the market... but her valuation sounds out the roof to me. It'd have to have close to 0 miles, and all updates done, before I'd even look at it, at that price.... Your price ranges sound about normal from what I see. Of course there are the extreme examples..... real hi, and dirt cheap... but the norm is in your thoughts....
Pretty sure, if I were shopping, I wouldn't even start it.... not without cleaning out the tank. 5-6 years even a warm climate is a lot of moisture, and gunk floating around. If I didn't clean it, it'd plug up an injector in a heartbeat... that's my luck.
Realize that bike has been sitting for 5-6 years.... and its over 11 years old. Probabaly one of the first things I'd do besides cleaning that tank, would be to reseal it.
As for updates..... if you do all the eXpensive ones.... yourself..... you may get it done for around 2k. Hired out... over 3k.
these are listed according to priority:
First one up is the tranny..... to much of a safety issue.... get it rebushed.
Second... fan assisted oil cooler...
Third.... new tune. ....
4th.... have that triple tree checked out....you may wanna reprioritize, if its funky (handle bar wobble at different speeds)
there are many more ..... but off the top of my head, they can wait until cash flies in the door. ... As a matter of fact.... I just got the LAST 3 of my updates done this past winter.... the last 3, and I've owned the bike since 9/12/02. And they were: build up kick stand, air cleaner kit, and the pick up tube in the primary.