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A 6-pack of Copco Bag Caps drops from $18 to $7.99 with free shipping at Rakuten. The best price we found on individual bag caps was $4 shipped and the next lowest price we found on a 6-pack was $22 shipped. These bag caps attach to bags holding cereal, nuts, candy, and more. They can be reused multiple times. There's no sales tax (except IL & CA).