Shopping with nothing

I was watching Ellen Degeneres show the other night and like Ellen, I got blown away by her guest’s ability to collect and combine coupons to get the grocery stuff at less than half their costs and at some point totally free at all! She said she gets her coupons from the magazine, newspapers and online like Sherry's discounts and coupons. Ellen’s crew crashed into her house and found huge tons after tons of grocery products. She claims she ain’t no horder because she shares them with her neighbors who are in need.
What you think is impossible is actually possible.