Prices on backpacks start at $4.97 at Walmart.com, plus, through 7/15, shipping is free on all orders! Since shipping normally runs $4.97 for orders under $50, this is an excellent time to order. The pictured Mountain Edge 17'' Bungee Backpack is $5.06-5.11 depending on the color, and this 17" Full Size Dome Backpack is $4.97. Also check out character backpacks on sale, like this Disney Princess 16'' Backpack, which drops from $9.88 to $5.83, and the Star Wars Episode VII 16" Backpack, which drops from $9.88 to $6.11. Sales tax is charged in most states.