Office Depot and OfficeMax via Rakuten offers the Wenger Synergy 15.4" Laptop Backpack in Black/Gray for $49.21 with free shipping. Excluding the below mention, that's the lowest price we could find by $20, although most major retailers charge at least $80. It features an essentials organizer, multiple interior and exterior pockets, padded back, and contoured shoulder straps.

A close price: Amazon offers it for $50.07 with free shipping.