Well, nothing wrong with the watch, it's still really nice-looking with that lume. But, its value would be less than what they're asking I think.

Generally, the watch is worth whatever you're willing to pay for it; if it's something you've been looking for for a long time, make an offer accordingly. But if it were me, I'd probably not want to pay more than $5000-5500 USD for it as others have suggested. Maybe $6 as it's a really nice example and prices seem to be getting a bit out of hand this summer but I digress...

I think there was one up for sale recently, on Chronotrader (link at top right in the forum header) for a lower price. I can't vouch for the seller but that could be worth taking a look at...