I found a nice stainless utility sink at Habitat for Humanity store. Has a commercial Chicago Faucet which needed new o-rings, and is fine. I don't have a long sink to put the trays in. I just put them on the counter top. I also bought a couple of sets of kitchen cabinets at the HforH store, and made counter tops from 3/4 plywood coated with several coats of marine varnish. It's been working fine for me for more than ten years.
I would say check out Habitat for Humanity. They have a lot of that sort of stuff and the price is reasonable. Plus, you're helping those in need.