CVS: Unadvertised Frito Lay Extra Buck Deal = Free Chips!

Here is an awesome deal at CVS that will help you score 15 1oz. bags of chips for FREE! Woo Hoo!

Buy 3 Frito Lay Chips = $1 Ecb (limit 5!) *Unadvertised promotion*
Deal Scenario #1:
Buy 15 bags of single serve Frito Lay Chips on sale 3 for $1
Total = $5
Get back a $5 Ecb
Final cost – 15 bags of FREE chips!
*Keep an eye out for a sign regarding this promotion near the peanuts and sunflower seeds

(Thank's Hip2Save!)