But are you talking about the sleeping pad (which was the original subject of this thread) or the air mattress, which is what I listed is currently available at Costco? I assume the former because the air mattress is about 6" thick!!
These finally showed up at our Costco, so I picked up two pads and the air mattress. Both seem top quality, though I'd prefer each to be a bit wider. For the price, they'll certainly do until we decide if we want to spend the money for megamats.
They also had these Ozite outdoor rugs on sale for $13. They're surprisingly lightweight, and will be great around camp...
http://www.ozite.com/products/retail/indoor-outdoor-rug/