I was there at the e10 presentation in HangZhou, China.
The chip was produced by Samsung, the design of it and the PCB by Ebang.
There were 4 teams of non Chinese people at the event, 3 from Russia and 1 from Serbia. Every team was a large account to Ebang.
When they announced pricing, everyone was kind of a stunt. Everyone came optimistic to buy a whole lot, like 1000 machines. On that day they offered e10 for $5500, and no one bought anything.

Next day they lowered the price to $4900, and I still think that no one bought anything.
First batch delivery is set to 20.1.2018
Machine is real, I have seen it working, but just a bit expensive.