When I first bought the trash can (that I LOVE) I assumed buying Simple Human bags would be overpriced and a way to keep purchasers of cans beholden to the company. I WAS WRONG! The bags are really well-priced, especially if you get the large bundle. More importantly, they are the strongest trash bags I've ever used. In 6 months I've NEVER had a leak, NEVER have to clean out the can. The bags are worth every penny.