if something is on sale for b1g1f and I have a coupon for that item for b1g1f ~ how would that work? Is it useless to use them together or would I get 4 of said item for the price of one?

Hi all. We just moved from San Jose to Phoenix. I lost my coupon binder and all of my coupons in the move. I need to start all over. I'm buying a new coupon box and would like to trade stamps for coupons in order to fill up my box. Does anybody have any potluck envelopes of coupons they would...