CVS is one of the few stores that will allow customers to use a coupon on the free item in a BOGO sale. It's one of the many things that I love about shopping there. And this week, Sundown gummy vitamins are on sale, buy one get one free. Pick up your choice of vitamins for as little as $9.29 for two bottles. Then use two different $2.00 coupons (each one has a limit of one per customer) and pay just $5.30 for both! That's a 71% savings!