To get a $10 reward card from Kmart, purchase a $50 gift certificate from May 4–12, 2008. The $10 reward card expires on May 31, 2008.
At Sears, buy a $50 gift certificate from May 4–11, 2008, and get a $10 reward card, which also expires on May 31, 2008.
Give the gift certificate as a present to Mom on Mother’s Day and keep the ten-spot for yourself. Or use both the certificate and the reward card for your own purchases and get what amounts to a 20 percent discount.