Dave, There isnt a place to see what they are worth, not that im aware of anyway. Ive been collecting the sf3d kits since the 1980s and have a broad view of what they would be worth, but i need a better description of the kit. The majority of the kits generaly are worth 15-20 us dollars and the larger kits can go for the new price or higher and the neuspotter and krachenvogel are a lot higher still. If you want to get more money for them i suggest that you put them on ebay if not email me stipps@ntelos.net and we could work out something? later, Jerry