A small metal cart costs about $40 at Harbor Freight., here is a link.
https://www.harborfreight.com/16-inc...cart-5107.html
You need metric wrenches and or sockets for assembly. I have one and use it quite a bit and if I had a forge it would go on one of these so I could take it outside. A forge indoors needs significant ventilation to prevent carbon monoxide build up and I do not like the smell of burning propane either.