If you have the $1/3 coupon you can price match the walgreens ad at walmart and get 3 bags for 50cents...they price match any advertiesed price which would be $1/2 from the walgreens ad...
By my math its better than using the coupon at walgreen on 3 bags to get the $2RR...for 3 bags there would be $1.50 counting the $2rr you get back oh both places are plus tax if you have to pay any on food.

But hurry time is running out, you only have one more day till the walgreens sale ad ends.