Not sure if this is available outside Massachusetts at all Stop and Shop and Giant stores, but my local Stop and Shop flyer included an insert for Procter and Gamble, listing about 30 items that qualify for this promotion. Buy $30 in participating P and G items, get a $20 online NFLSHOP.com gift code.
(I don't have a relevant link to a website, which is why I'm not including one. )
