Paul, the original ACE/Thundertiger ARF cost $200. plus around 8.00 for s/h from Hobbypeople, Ttowerhobbies and most Hobby stores on line. That ebay is a good price but I dont know how much of a difference the modified v hull will make. In boats, that I also have several rcs, the flatter the bottom the less drag and easier to get up on speed.The reviews on the stock form speak kindly of this model, easy to fly and good on water. I happen to have one of the regular ARFs but have not flown it yet. The wing looks like that may have been changed. Ask if its symmetrical, semi or flat bottom. I would bid on it myself, but I have a Seamonster to start and the Seamaster to finish. I see he has several.