I purchased Construct Master Collection 1 month ago. The most important aspect of my purchase was that I thought mediation plugins are working. When Chadori told me it was more affordable to buy the whole package than just to buy the master ads package, I bought the whole package. But regretfully realized that facebook or unity mediation (not test the others) plugins does not work for IOS export, i didn't test for android. Moreover, I need to use Cordova build or Phonegap to make use of these plugins because master ads plugin not supported by c3 build service.
Other issue is the firebase plugins in the package that have been converted from rex's c2 plugins. So if you want to use firebase analytics in mobile, these plugins do not work. I only need mediation and firebase plugins for my project and see that none of them are working at all so that i wanted refund from Chadori 2 weeks ago. I sent several messages to him but he is not responding to my messages anymore as soon as i wanted refund.
I am sharing my experience with these plugins so that nobody is mislead by the things he wrote about these plugins. I lost a good deal of my time to make these plugins to work. I am still waiting for an answer about refund but probably not going to get one.