Sewer, not to intrude on your deal, but if you want to find out what the value of a kit is, a good way to do it is to put it on eBay. Then multiple buyers see it and bid on it, and unless you are very unlucky, you should get about market price for ir. I've been surprised in the past by just how consistent this has been.
Of course, you have a deal on this ship, but in the future, it might not be a bad idea to eBay it. I've gotten more than one rare old kit from a widow selling off her deceased husband's inventory. I like to think that the modeler is smiling up there in the heavens as he sees his wife getting a little something for the kits, and a modeler putting the kits to good use, rather than them simply being dumped in the trash.