While I think it is way overpriced, there's no need to run the guy out. I'm more inclined to comment on FS posts that I think a potential Pinside buyer may get taken on... Like hiding wear, or pointing out well known issues with specific titles.
With this ad, it could be an honest first time seller mistake. I don't think you could even get 3K for a Godz. at a retail location or show, unless it was around Christmas time. So, no real risk for buyers here, it just won't sell.