Walmart.com has the Eastsport Dome Backpack for $8 + shipping. Shipping is about $1; free in-store pickup in most locations. Features front-pocket organizer includes detachable keychain holder, contoured padded shoulder straps. [BizRate]

Eastsport Mesh Backpack = $7

Eastsport Laptop Messenger Bag = $9

Eastsport Sport Backpack = $10

Eastsport Basic Tech Backpack = $14