Now until 8/27 you can get the 80 Count Glad 13 Gallon Quick-Tie® Trash Bags on sale for $6.99 (Reg. Price $10.49). Choose in store pickup to avoid shipping cost or purchase 3 for $20.97 and get free shipping to your home with Staples Rewards (free to join). You can go here for this deal!
They also have the Glad® Tall Kitchen Quick-Tie® Trash Bags 200 count for $16.99 (ships free with Staples Rewards or choose in store pickup).