This deal has ended.
Through Saturday 3/17, SmartBargains has all sizes (which is important as full and queen are usually more) of the Aerobed Guest Bed Instant Air Mattress for only $55.99 after this rare 20% off coupon for new customers (returnees can get free shipping with $75). This is one of the best deals I've ever seen for an Aerobed. They have a few other styles but this is the most common style, the lowest price and doesn't have an extra shipping surcharge. Shipping is $8.95 and there is no tax (except MA, KY, NC).