I have a full size futon, but I'd rather have a wall bed/murphy bed/flip up bed.

I see https://murphybeddepot.com/products/next-bed-free-shipping-to-cont-48-u-s-states, and also https://www.youtube.com/watch?v=9-rwAUR14Z8. 

I like the idea of a couch, and like the simplicity of flip up/down "next bed" - where there's no frame around the bed.

Does anyone know of any plans or where I can get a reasonably-priced bed/couch like that?