I have only found one place that I makes custom stencils and it was going to be almost 200 dollars for the one stencil. There are 8 lines in it, basically I need the entire stencil text as a block because I am doing about 100 invites by hand.
Unfortunately, it's rather expensive to create a one off laser stencil like you are describing, and if it's small text you want, I can't think of a way other than laser cutting to get the results you will want. I don't know who you've tried so far, but if you really need this stencil, I would try contacting
LaserRaser,
LaserExcel, and
Designer Stencils. Those are the places I know of who do custom work. (And if you do find somewhere else, please let me know and I'll add them to my list!)