As someone mentioned, immediate "profit" is made on a good buy on a good gun. There is no worse purchase than a mediocre gun at a bargain price. All you can do is sell it at an even lower price to a buying public that has no interest in your product. This is obvious at any local gun show. Hundred dollar guns can be bought by the dozens at fifty dollars but can't be resold for forty five. Buy exceptional, high original condition guns from motivated sellers for somewhat less than their real value, not a difficult thing to do if you really have some money and will really offer that money on a purchase.