Cycloretro is great - they did a full Campagnolo 8-speed Record Delta group for me in Zunow pantographs. It was closer to $1K with all the additional work, plus shipping, but he did an absolutely stunning job.

I also recommend La Vie Velo Classique, a craftsman based in Hungary. He did a great job on a 3Rensho pantographed crankset for me - photos and contact info here:
https://djcatnap.com/custom-3rensho-...elo-classique/