Each 28lb Bag of World's Best Cat Litter sells for $20.87, but you can get two bags for $41.10 or three bags for $58.74 when you add multiple items to your cart at Jet.com. Shipping is free on orders over $35, otherwise it adds $5.99. While the price of a single bag matches other retailers, the price for three bags drops to just less than $0.70 per pound—the best deal we can find anywhere. For additional savings, you can choose to pay with a debit card and/or opt out of returns. This is the only cat litter I purchase for my home. It's quick clumping and made from sustainable ingredients. Sales tax is charged in most states.