AltaTac via eBay offers the Kelty Strike 2300 Tactical Backpack in Coyote Brown (pictured), Desert Tan, or AUC for $79.99. With free shipping, that's the lowest total price we could find by $9. It features drain holes in the main compartment, two zippered side pockets, removable rain cover, adjustable suspension, quick-release shoulder straps, and more.