REI-OUTLET offers the Patagonia Yerba 15" Notebook Backpack in Prickly Pear for $28.93. Shipping adds $5.99, or opt for free site-to-store. (You can also bag free shipping on orders of $50 or more.) Even with shipping, that's tied with our September mention and $15 under the lowest total price we could find for this backpack in any color elsewhere. Sales tax is added where applicable. This 22 liter daypack features an interior padded sleeve for laptops up to 15", stretch-mesh side pockets, and more.