The 5-pack of the Junior version at Walmart also is eligible for a pickup discount. It's $8.57 with pickup savings.
Note the size difference, though. The regular one is "3.00 x 3.00 x 2.50 Inches" while the 5-pack of the Junior is "10.00 x 2.38 x 2.00 Inches" - presumably the 10 is the 5 boxes, each at 2.