[BruceK]

The "as new" claim is embarrassing for the seller. "Ok Mr Seller, put it into the advertised condition and I`ll buy". That kind of stuff is called "puff"(sales talk), creating no legal obligation (here at least), but great for negotiating.
Some sellers won`t negotiate at all post survey. Probably leads to many an unsold boat, but leaves the buyer unhappy and out of pocket.