You've missed the point totally here mate.
Second hand FC = $700 with heckers hand controller
Nismo AFM's = $700
Thats $1400, more if you want to buy the ECU new.
Yes it will do the job. However, if you want to do something basic like a Flex tune you cant do it.
OR you could buy something like a plug in Link G4 for a few hundred more and be able to do heaps more with it.
There is "cheap" and there is "value". They are not the same sometimes. A Power FC in 2016 is not a "value" option.
You don't buy a box of rotten banana's for $1. Why? You can't do anything with the bloody things!