[spdbrake]

I'm thinking you may be able to find a Company that will print you a Decal for $19 and you will have to supply the Aluminum or Steel plate.

Honestly for a Company to punch out a plate, Layout the custom dies for the lettering/numbers then stamp the plate, Apply two different colors of paint to the plate, the $120 sounds about right.

Possibly there are cheaper plate reproducers out there but then again they're producing quite a few in a production run, all with the same lettering/numbers and not a custom plate.