mhoran_psprep is spot on.
By doing a strict debit/credit analysis, this seems like a golden opportunity. Spend ~$133 for $245 in gift cards. Presumably you could sell those gift cards at a 20% discount, or use them on the next trip. You received $1760 worth of merchandise for a positive income.
Some of that merchandise could be sold. Sealed health and beauty supplies, and other items that do not spoil, could be sold on Amazon, Ebay, or a flea market. If you received the item for less than free, you could sell it at half the cost of the store. You would have plenty of happy customers.
It is telling that none of these have cropped up.
I have seen some people donate a lot of the items and received a tax break. This is one "sure fire" way to extract value out of the merchandise, but at a deep discount (dependent upon the tax bracket).
Often times the merchandise is useless. Do you really want 20 2 liter bottles of Hi-C? I would feel guilty for donating it.
All that being said, my wife used to do coupon-ing and we are still using items that she purchased four years ago. Right now, she earns enough at work to make spending the time on coupon-ing unprofitable as loss of opportunity cost.