The difference between this / RAMA tray and a simple metal tray or bowl from Amazon or Aliexpress is the weight, density, and shape.
I got these good looking metal bowls, but they're usually either made of thin aluminum or they are hollow double-walled aluminum. I could see the appeal for a solid aluminum block CNC'd to a tray, as it would be more dense feeling. The difference between a CNC'd metal tray like this and a typical metal tray from Amazon would be comparable to the difference of between a Drop Alt and a $500+ custom. Not really useful, but cool to have. Also, something i was looking for while picking was that I wanted something that didn't look like a bowl - the RAMA tray looks more like a tray, and not a bowl. A lot of the alternatives look like dog food bowls.
btw idk if you'll really be able to get 'mirror polished stainless steel' CNC'd for that cheap