It looks nice. Pipes are a worry, just cuz they're covered. It'd be better to be able to see them. Everything everyone has said here is why it seems overpriced. If that bike was in L.A. it would go for even more, but, it does seem a little steep - especially since it's not "unmolested". Someone installed an oil pressure gauge - those are cool but not stock. nor are the 4 into 2 pipes - but they could have been put on by the original shop. Broken tach could be the cable/tach OR the drive itself. Having gone through that issue w/my 550 I'd bet on the drive. The Buchanan's spokes and new wheels are a plus, if true. (Trust no one - if your Mother says she loves you, check her sources).
What it comes down to is: Do YOU think it's worth it? If so, you pay what you're willing to pay. Check the tank, check the tires, check everything everyone has said here and at the end of it all, if you want it - pay whatever you think is right.
Good luck, and Welcome to the forum.
P.S. - upgrades and changes don't necessarily make the bike worth less.