Are they worth? Not so expensive on eBay, should I get one?

Nooo… one of the worst controllers ever made. I’m sorry… but it’s just not good. If it had 2 joysticks it might be better. I think it was good for valve to have made it as they learned for the steamdeck. Same goes for the consoles they made with Alienware years ago. Some of that stuff got them to where they are now with the steamdeck.