There are rebate forms hanging right in front of Adam's 100% Natural Peanut Butter at the Fred's in Eagle River, and today it is on sale 2/$5. The rebate is in the form of a $10 REI card when you buy two jars of PB and limited to one per household.
I picked up two forms (one for my mom) and after stopping by Carr's on the way home, they have Adam's P.B. back in the markdown section for $1.65 each! There were probably about a dozen jars left as of noon today.