I picked up 6 lightly used Roll-a-Cots at Smith & Edwards Country Boy Store near Ogden, Utah. $20 each. A few had bags (but they weren't in great shape) and they don't have the mesh pocket, but the price was right.
They had 6-8 left on Friday. My count wasn't exact because a few cots seemed to be missing the legs, and they may have more that haven't been found yet. Per their tag line, "We have what you need, if we can find it."