Amazon has a 6 pack of the Glad Drawstring ForceFlex Odor Shield Tall
Kitchen Bags, 13 Gallon, 34 Count Bags on sale for $31.98. That comes to $5.
33 for one box. Closest I found was Walmart having it for $6.84 for one box.
If you do a subscribe and save (you can then cancel) it comes to $27.18 for
6 boxes ($4.53 per box). Shipping is free.
Link: http://www.amazon.com/Glad-Drawstring-ForceFlex-Shield-Kitchen/