REI Garage offers the Burton AK 20-Liter Backpack for $44.73. Pad your order over $50 to receive free shipping; otherwise, shipping costs $5.99. (You can also opt for in-store pickup.) That's the lowest price we could find by $60. It features a shovel and probe storage pocket, external pole storage, and a padded hipbelt.
REI Garage offers the Burton Kettle Backpack in Satellite for $14.73. Opt for in-store pickup to avoid the $5.99 shipping fee. That's $9 under our February mention and the lowest price we've seen. (It's the best deal now by $13.) Features include a padded laptop pocket, ergonomic shoulder straps, and external zippered pocket.