When my buddy built his house he had an amish guy from the Odon area build his. I want to say he payed upwards of $9k but don't hold me to that. I believe that also included delivery and install. I'd have to ask him.
I had my cabinets and vanities custom built in Shipshewanna. If you want a good quality cabinet maker, you may look at several months due to their backlog. If you find a cabinet maker that can start right away, it's a good sign that he's not very good.
Here are a few pics of mine.
Cabinets aren't cheap at all. I've heard some custom cabinet makers quote $400+ per linear foot. I got all the cabinets in my kitchen, a 36" vanity, a 60" vanity, a 72" vanity and a 60" wall cabinet and it ran $12k. Options on cabinets such as glass windows, pulls and handles, pull out drawers, upgraded drawer glides, etc. can really bring up the prices.
My cabinets have the ez close drawer guides and all the interiors are birch face plywood. Particle board is much cheaper. All my exterior wood is quarter sawn red oak.