For awhile Haagen Daz was giving out free pints when you sent in 4 proofs of purchase. The problem was they gave you an extra proof of purchase with the coupon (it was inside the lid). So, basically you buy two pints, cut out the two UPCs on the carton, send in the two that are attached to the coupon, and it was buy 2 get 1 free. I haven't been to the supermarket in a while, so I don't know if they still have these coupons or not.