I was going to suggest concrete or stone but holy hell that is some sticker shock.
I suppose you could find a deal on one from CL or something, but plastic and SS way more common, and affordable. The plastic I am not a big fan of...sink is light and flexes, questionable weight capacity, dislike square inside corners, chips/gouges easily, stains easily, usually looking like haggard *** after not a lot of use. The EL Mustee I have experience with, absolutely hate detachable legs, cheap feeling and come off too easily, usually accidentally kicked off when standing at sink because floor is never level.
That being said...
I am just the right amount of sick and twisted to think I could make my own out of concrete, for not much money. I like the concrete...they are durable, and heavy. I like the slanted outer wall these types often have, I think that is preferable to the traditional cube shape.
Forming might be a bit of a challenge, but I know a concrete guy who would help out in exchange for his favorite adult beverage...I think SS flashing on the top edge would do well to guard against chipping, which is a big personal pet peeve on plastic, and bare concrete. I think I would leave external corners square for ease of forming, and grind radii or chamfers on them when done. Wire mesh or rebar reinforcements. Radiused inside corners could be a challenge.
Base, most likely something simple made of angle iron...if in a basement or garage, I'd look for SS angle, possibly pipe...upstairs of home probably could get away with painted steel. A quick googling shows SS angle is kind of pricy... $115 for 20' of 304SS 1x1x3/16"...well, not like this is remotely close to top of list, I can ponder this some more.
Oh, and of course one of these commercial faucets...if they withstood years of 8+ hr days being abused at the hands of apathetic teens, drug addicts, and jaded management in a chain restaurant, with no issues... probably last 2 lifetimes on a homeowner utility sink. Of course you need the extra long add-on faucet w/ flex elbow, and the longer pre-rinse hose. Pictured is a wall mount, deck mount might be easier depending on sink. Probably also add a nice standalone HD sillcock above the sink for garden hose attachment w/o worrying about tying up faucet, some rugged soap and towel racks close by, possibly a pump style soap dispenser.
I think this could be an interesting project.