300 bucks is highway robbery!
I do metal art with a CNC cutter which is the same process used for lettering except that lettering is easier. A roll of vinyl is a $20.00 adventure, $30.00 if it's gold or silver foil. Most of what I do is weather
vanes and wall art, such as airplanes and boats...some wildlife. I use my vinyl cutter to create masks for powdercoating.
What you want is a 10 minute job. Send me the lettering and style that you want I'll type it in on the computer. A key stroke or two will make that a .dxf file that you can take to anybody with a vinyl cutter and make your lettering. Use the remaining $200 or more dollars to buy someting really nice for the wife or the boat depending on how lucky you feel.