If you want a commuter type trike, you could probably build easier than find one. If you are patient, you might find one on craigslist. There are other companies that had similar trikes, such as Manco. Manco built for a few different stores so they can be under different names. There is a Cenex (Manco) Rustler trike about an hour away from me on FB marketplace, if you live close to SD it would maybe be worth looking at. I advise that if you want to get into the three wheeler hobby, find a machine that has parts that are easy to find. Honda 185/200 stuff is a good place to start. Because you want a utility trike i will recommend a 200e (chain drive, high and low range, electric start) or a 200es (shaft drive, high and low range, reverse and electric start). The 200cc bikes were a staple for honda and parts are easy to find.
Currently : trx400fw, ct70, 250es,200x, xl80s, 350x, 350x, 225DX, trx300