Digital Goja via Amazon offers Prime members the Goja DSLR Camera Backpack, model no. XI0010, bundled with a Goja MagicFiber Microfiber Lens Cleaning Cloth for $19.99 with free shipping. (Non-members can spend $35 or more to dodge the $5.97 shipping fee.) That's the lowest total price we could find by $20. It measures 12" x 6-1/2" x 15" and features customizable inside dividers and a tripod strap.