If we look at the script and plans of the Team, it seems to be really 1/3 of their work already applied, with the Team that looks professional, in large numbers and good distribution of tasks, I believe until Q1 / 2019 is above half of work done
What script you mean? Their code on Github? Van you provide link please? Does they have mvp or demo version of exchange already?
A demo or a mvp of the exchange can change the sale numbers a lot, if it is good.