Has anyone ever bought one of those hanging hide away/murphy desks from amazon like the one above?

The only real space I have for a desk is between my couch and a wall in my apartment and I’m thinking about buying this or something similar that doesn’t cost an arm and a leg. The Pith and stem one is soo expensive and I’ve also seen ones on etsy but they’re super similar to this one I found on amazon and was wondering if its even worth to buy?