Important to note that these are 2017 models on sale. Previous threads are cheaper for the 2016 model. Main difference for the 2017 version is that the laptop compartment has been relocated against the person's back for better weight distribution.
Osprey Porter 30 available from Amazon: $90 + tax w. free shipping
Free one-day shipping for Prime members.
Also on sale is the Osprey Porter 46 available from Amazon: $105 + tax w. free shipping
Free 2 day shipping for Prime members
Black - $105
Castle Grey - $105
Diablo Red - $104.49
Mineral Teal - $104.49