Cheerios: Get 4 $1 Coupons + Possibly Win a FREE Box!May 16, 2010 by Mitchell Wischmann This post may contain a link to an affiliate. See my disclosure policy for more information. Sign up and Cheerios will email you four $1 off coupons, one each week for four weeks.You could also possibly win a FREE box! If you win, you will be notified by mail in 6-8 weeks. They are giving away 50,000 FREE boxes, so your odds seem good!