They are looking for a particular style that's not exactly the current style. There are probably some still being made in small quantities, but not as expensive as custom. I thought Crust had one, but their canti fork doesn't have a twin plate crown. They do have a cast replica of a twin plate crown which they use on their disc fork, and similar cast crowns are available from the Asian frame parts casting companies. I imagine Maxway makes this style fork for somebody, but it's niche product and finding the right one is going to require searching.

The other thing OP needs to establish is the desired axle-crown measurement.