The Big Agnes Oak Street Air Sleeping Pad drops from $59.95 to $28.73 on REI.com. Shipping is $5.99, which brings the total up to $34.72. However, if you spend $50 or more, shipping is free. Free store pickup is also an option, but availability may vary by location. REI's price on this sleeping pad is the best deal we could find by $27. This product is lightweight and waterproof for backpackers' convenience. Sales tax is charged in most states.