I bought My AA-Zero2 board for $89 from DX Engineering and made a few you tube videos on it.
At first was very frustrated by lack of support and the number of errors on their web site and software but I finally got it working.

Here are the you tube links 

https://www.youtube.com/watch?v=Au5EDlXOcOs

https://www.youtube.com/watch?v=3K6qOPxwzps&t=1s

https://www.youtube.com/watch?v=6Gk67iNEcU4&t=9s