TomTop offers the Tomshoo 45L+5L Mountaineering Backpack in Royal Blue, Black, or Red for $17.99 with free shipping. That's the lowest total price we could find by $6. It features adjustable shoulder straps, interior and exterior pockets, reflector patch, rain cover, and measures 24" x 12" x 8".

Note: The countdown timer on the product page does not reflect an actual expiration time and resets daily.