Hickory Springs folding beds??

Does anyone have any experience with these? http://www.rvsurplus.net/catalog/display.php?product_id=2580 A little more pricey than me making a custom-wood folding frame, but looks very convenient, doesn't take up much space, and very comfortable without using a bunch of wood and hinges. And its NOT that much more than supplies, much less the labor.
I googled the name, and it appears they are used by some manufacturers in some of the full-on travel trailers and fifth wheels. I'm wondering if the full might be the cat's meow in a 6X12 cargo.
It almost seems like one of those "too good to be true." Springs instead of wood. Only 8-inches wide folded up on the wall!
A comfortable bed is top priority in my cargo conversion, while still leaving space for some small conveniences and comforts.

I googled the name, and it appears they are used by some manufacturers in some of the full-on travel trailers and fifth wheels. I'm wondering if the full might be the cat's meow in a 6X12 cargo.
It almost seems like one of those "too good to be true." Springs instead of wood. Only 8-inches wide folded up on the wall!

A comfortable bed is top priority in my cargo conversion, while still leaving space for some small conveniences and comforts.