[Porchdog]

Just Guessing 12" x 6" x 1" - is that about right?

We would most likely water jet the basic shape and finish mill - in 3 different axis. By the time that's done the material cost is probably minimal - machining is expensive.

As asked above - how many do you need and how quickly? With basic dimensions I can probably get you a quote.

They probably used aluminum because of the ease of casting. I would want to anodize aluminum for that application. I suspect stainless or bronze would be about the same price for finished parts.