Walmart offers the Lowepro Slingshot Edge 150 AW Camera Backpack in Black, model no. LP36898, for $69.99 with free shipping. (Best Buy via eBay and B&H Photo Video both charge the same.) That's the lowest total price we could find by $20. It features a rotatable sling, side-access pocket, padded back pad, stability strap, adjustable divider system, all weather cover, and two removable straps.