The AWS SC-2KG has a silver colored plastic body, a stainless weighing tray, and two translucent, plastic cover/trays. $20ish. Just to be clear, it's not all stainless, not even all steel. All metal scales are hard to find and very expensive.
The commercial quality, very rugged, commercial scale, I use for roasting, is a lot larger, doesn't have much more in the way of capacity, costs more than five times as much as the little AWS, and it's got a plastic body, too.
The SC-2KG is an excellent scale for coffee. I bought one the same day I read a recommendation from Mark Prince on -- IIRC -- Amazon, which was something like six years ago.
However, it's not perfect. It's battery powered; and like most battery powered scales it has an auto-shutoff which auto-shutoffs at the worst possible times -- usually at the very moment whatever you want to weigh has gone into something which needs taring.
Recently, AWS began offering a modified version of the scale, the SC-2KG-A which can be powered by batteries or by AC adapter. With the adapter plugged in, auto-shutoff is defeated and the scale can be not only left on, but will hold the tare indefinitely. Also sold at Amazon, and also $20ish. I've had mine for about six months and think it's aces.
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