Just have to start searching. S/B something in the business ads in phone book, internet, local manufacturing shops, etc.
Then you have to find one that will dink around with your small order and still affordable.

I give them cut out blade patterns to go by. They copy them and make a cutting pattern for the water jet. I give them estimate of the quantity of each blade I am hoping for, plus how much strip to leave for me to cut out onsie twosies. Then I pay them without bitching about the price. The sheet I get back is "optimized" as far as how many blades I end up with.

"The significant problems we face cannot be solved at the same level of thinking we were at when we created them."
Albert Einstein

At Khe Sanh a sign read "For those who fight for it, life has a flavor the protected never knew".