This week at Walgreens, four- to eight-ounce bags of Trolli and Black Forest gummy candy are on sale for $1.50. Buy one bag and receive a $1.50 Register Reward. The candy will be free! Register Rewards are coupons that act like in-store credit on your next purchase. Get a Register Reward by buying qualifying products. Keep in mind, you can only earn one Register Reward per transaction. In order to get multiple Register Rewards on the same item, buy them in separate transactions.