I tried to do a semi-custom order from a place called KING. They took the money, then no confirmations or communication. The phone number on their website was a dead-end. Anyway, I can't say what happened. PayPal issued a refund. At least talk to them on the phone and get some bidirectional communication if you choose to use that company.

Bespoke looks like they do some nice work, but the "custom" option isn't cheap.

DId you find some other place? Maybe China direct?

Another option might be a custom spider adapter, allowing cheaper rings to be used with your crankset.