Piggly Wiggly Deals - January 22-27 - Follow-up

I just got back from Piggly Wiggly, and they do let you do more than one of those Buy 2 Get one Multi-grain Cheerios for FREE per transaction. In addition to that, I did find that it took off coupons for all 3 boxes, even the FREE one! I wasn't sure if PW allowed you to stack on a FREE item. I had $1.50 total in MC to take off the three cereals, so it cost me $4.50 or $1.50 a box. The Cataline printed out another coupon for $2 off 7 at PW.