Walgreens: 5.5-Oz Pringles Potato Crisps Chips (various flavors) on sale 4 for $4.54

Here is how:
Log into or Register for a MyWalgreens account (free to join)
Select a quantity of 4 5.2-Oz Pringles Potato Crisps (you may mix and match):
5.2-Oz Pringles Potato Crisps (Original)
5.5-Oz Pringles Potato Crisps (Cheddar Cheese)
5.5-Oz Pringles Potato Crisps (Ranch)
5.5-Oz Pringles Potato Crisps (Salt and Vinegar)
5.2-Oz Pringles Potato Crisps (Lightly Salted Original)[/COLOR]
5.5-Oz Pringles Potato Crisps (Pizza)
5.5-Oz Pringles Potato Crisps (BBQ)
5.5-Oz Pringles Potato Crisps (Scorchin' BBQ)
Clip the $1 off 4 coupon on the product page
Select the Shipping option and click on "add for shipping"
Proceed to checkout
In cart, apply promo code SENIOR20 (20% off regular priced items sitewide with code)
At checkout, make sure to select "Ship to store FREE"
The price should be 4 for $4.54 + free ship to store for pickup