Starting on 5/14, score a free pack of Caramel M&M’s at Walgreens! The 2.83-ounce sharing size bags will be on sale for $1.25. Buy one and earn a $1.25 Register Reward at checkout. You can earn one M&M’s Register Reward per transaction. Remember that Register Rewards don’t roll, so you can’t use the M&M’s Register Reward to buy more M&M’s and earn the Register Reward again.