I have seen this before they did this with motorcylces. I actually posted a question to seller and got very official ebay looking replies, definately a scam...someone should alert the dealer about using their boat.
Last fall there were several boats posted that I recognized and turned them into to ebay. All they do is delete the auction but the scammer usually just puts it right back up under a different name. Even my family's vlx showed up on ebay. This guy would go to wakesiderides.com and essentially copy all of the info from that website down to stereo and ballast systems. The auctions look very legit but the price does not.
I think the whited/blurred out registration numbers in the third picture down is a pretty good hint to anyone looking at it that it is definetly a scam.