The price of carry-out bags may vary from store to store. But they are generally no more expensive than other plastic bags. Prices may vary depending on factors such as size, quality and quantity purchased. To encourage customers to use carry-on bags, some stores may choose to give them away for free when they shop a certain amount. In addition, some stores may also offer discounts to customers by providing incentives for the use of reusable bags. Although handbags are often designed to solve more troubling health and environmental issues, they may be seen as a more viable option in the long run, given that their prices are not higher than other plastic bags.