Hei.
The price depends highly on the work you do by yourself (e.g. pulling the engine, disassemble, clean, blabla) because this takes hours of hours and is no origin work of an engine shop. I sandblasted all parts by myself, took care for common spare parts which were recommended (gaskets, rubber parts). The engine work is a precision job and has not do be done by monkeys feeded with peanuts. Sometimes cheap means to pay double...I think a full service job which means bring and pick up the car is around 15-20k?
Ritterbecks does that days a vintage italian high-performance engine for me and I am looking forward to let it roaaaar. The tune-up on the dyno is in my opinion a "must-have" to provide a perfect result.
just my opinion. Talk soon, Martin.