my experience has been that if they don't have what you want they don't get your $$$$, that's the problem, if the vendor guesses wrong and forgets to bring stuff he will make less then the dealer who brings other stuff, its also price based as well, also its how its displayed, some venders poorly display there stock, there booth is poorly set up, hard to move around in, for myself if its hard to move around in I stay away, no matter how good the product,