I missed the party but I want one!

I just came across the iotawatt and it is just what I need, but it’s discontinued and sold out and no use ones on ebay.

So how can I get one?

How hard is it to build your own and how do I learn to do that?

Or is this a good project for a budding teenage tinkerer/maker/programmer to learn how to make something and earn a few hundred bob in the process?

Or, if all else fails, what is the second best similar power meter that I can still buy?

Smart guys Australia will have some in September

Aha, thank you very much!
I assume someone is taking over production?