Through 2/22, this 100ct Hefty CinchSak Drawstring Trash Bags drops from $15.99 to $9.99 at Staples.com. Shipping is free for Staples Rewards Members or with in-store pickup. This works out to $0.10 per bag, and is the lowest price we could find by $2 for this quantity. The 30-gallon size bags are also on sale at this price, which includes 60 bags. Note: the instant savings will come off the total during checkout. Sales tax is charged in most states.