Finally a controller for the 42RE on the market...anyone know anything about it?

Came across something I hadn't seen since I took a hiatus from my Dart for a few years...it has me reconsidering using a Silversport GM overdrive tranny with controller, because the 42RE is like half the price. At the time there was no controller for the 42RE and the 42RH is just so hard to find.

Now I come across this site that is selling one.

E-Trans Control

Anyone heard of it or using it? Could be a great product to open up the possibility of using the much more common transmission in our mopars.