some kid wants to buy my 15'' avalon sound works long excursion series car sub and box. how much should i tell him to pay for it? The box is a sealed box exactly to spec. i don't want to screw him in the ass on the price cuz hes a friend and that thing is just sitting around and he wants to buy it from me. It would be nice, however, to have it cover part of the cost of my ED A series.