One of the things you need to remember about a large store like that is the reason they can offer lower prices is because of the volume they sell. Basically they need to sell 2 bow compared to a higher price local shop just to make the same amount of profit. And since there motto is "sell sell" thats what they do.
Probably the biggest mistake was trying to do it around christmas. you can forget trying to get good help at any major retailer during the holidays.