On Amazon right now you can get this nice adidas Alliance II Sackpack, Scarlet/Onix/Black, 18 x 13.75-Inch for just $7.52 – a 58% savings! There are lots of colors to choose from, but the prices vary. This bag gets excellent reviews.
This will ship free with Amazon Prime as an add-on item or qualifies for free Super Saver Shipping with a $35 purchase.
Note: Amazon prices and promotions can change at any time. The price(s) listed in this post is/are subject to change.