I used to order custom crystals from JAN Xtals. It is sort of local.
But I understand they are out of business. Calls do not go through and email goes unanswered. I contacted someone else and I received a very strange response. They do custom. There is no price. $100 minimum order. If you want one, it's $100. She'll only give me the price IF I place an order, and doesn't even give me an idea as to how many $100 will get me. That's very rude. So I discounted them as viable source.
Does anyone know a reasonable source in United States? Or elsewhere that will do custom frequencies and prices right?
If this doesn't work, I may have to start thinking of making a small DSP board that is customizable.