You can score free Benefiber Single Packs at CVS. Look for the 3ct packs usually displayed on hanging display racks. They are priced at only $1.67 (price may vary) and the $2/1 Benefiber coupon that is available does not a have a size restrictions. So, free after coupon.
Here is your deal:
Make sure to check out the rest of the CVS Coupon Match Ups for this week