The Raspberry Pi Zero is now available from multiple stores with header pre soldered.
I am no longer offering this as a service.
You can find it e.g.
Since there are people out there that has problem soldering, I offer the Raspberry PI Zero tested with a header soldered.
The price may seem a little high, but it includes the shipping from UK to Norway.
There is no supplier in Norway and I can only buy one at the time.