There are a few guns that I would not buy for a number of reasons. Nothing that looks like a submachine gun without the stock such as Tec-9, Mac-10, AR pistol or the H&K 9mm. I will not be getting any $3000 1911s or high dollar imports of 19th century firearms. The first category is that the cool factor does not out weigh the practical side and the second catigory is that my guns get used often and would have honest wear after a short time which would lower their value. Then there are firearms I consider poorly designed or junk!