$100 on Woot last June. http://www.woot.com/offers/aerobed-inclining-air-mattress
The bed features a built-in adjustable incline; a simple push of a button elevates the back to a natural incline position so you can comfortably do whatever you'd like to do.
The 18" height makes it easy to get in and out of bed, and you'll love the soft-touch top. There's also a safety auto-shutoff pump. Other features include horizontal channel construction, plus a built-in pump and a carry bag for easy transportation or storage.