I am looking at buying a Granite security 24 gun safe new but the electronic lock does not work at all. Already tried a new battery still does not work. The store has discounted it by 50% and wants to sell it as is. Does anyone know how expensive they are to replace or what goes bad with them. This safe is a floor model and I am thinking the buttons have been pushed hundreds of times. Any help would be great. Thank you Ps: The door is open and the lock pins are stuck out.