nutrigrain bars at walgreens?

Common Sense with Money says:


Buy 2 Kellogg’s Nutrigrain Boxes - $2.50 each
Get back $2 RR
Use 2 $.75/1 coupons from the 7/11 RP (some areas received $1.00/1)
Final Price - as low as $.50-.75 cents per box


Note:you cannot roll the $2 RR on another box of nutrigrain, you need to spend it on something else,
or you wont get another $2RR back