Sports Outfitters via Amazon offers Amazon Prime members the Under Armour Adult Surge Backpack
in Midnight Navy for $19.99
with free shipping
. (Non-members can spend over $25 for free shipping; otherwise, shipping adds $5.58.) That's $40 under list and the lowest total price we could find. Features include a 2-way zip main storage compartment, side zip storage compartment, front organization zip pocket with cell phone pocket, computer sleeve, breathable padded shoulder straps, and more.
Amazon Prime membership is $79 per year; however, Prime is free for college students for six months, and free for parents and caregivers for three months. (Note that there's a waitlist for Amazon Mom.)