You might want to check out Kelley Blue Book's website. If you scroll to the bottom, on the left there is a link for motorcycle values.

According to Kelley Blue Book, a dealer's asking price for a 2005 Kawasaki KLR650 should be $3,765. It does have low mileage, but is a private sale - so to me that is kind of a wash (a 2005 should always be in great shape). Granted these values are not set in stone, but I would definitely use it as a tool for you to help determine value.

As far as the bike itself, it seems to have a large following - and is quite good at what it is intended for. It was definitely high on my list - but I wanted something a little more dirt oriented.

Good luck!

-OldMike