Apparently there is a second mystery +Up printing on Planters nuts this week. It appears you only need to buy 4 to get the +Up- and each can is printing a $2 +Up on top of that. So here is how it looks:
Buy 4 cans of Planters at $3.99= $15.96
Get (4) $2/1 +Up per can = $7.96
Use (2) $1/1 printables (if you have them in your account- I did not)= $5.96
Get $5 mystery +Up Reward
So the final price is .96. If you decide to get the Nutrition variety, there is a $.50/1 Planters Nutrition coupon inside that makes the deal better.