I do believe many people do not understand how different a complex aircraft add-on can be. Our CRJ comes with 7 manuals and you will need all of them to learn how to use all systems. The standard aircraft in the sim comes with no manuals and are designed in such a way that the novice user will not need a manual to use them.
As for greedy, a page back I try to explain the pricing if you do not believe that is true, so be it. There is freeware (fantastic freeware even), cheap commercial products. more expensive commercial products and within a year very expensive add-ons. I can guarantee you that $100 add-ons will come online as they have done for every single flight simulator for the last 20 years.
If you have massive costs to develop and a small audience the only way to make it work is to ask high prices. Customers for these kind of add-ons have been super happy for FSX. P3D, X-Plane etc, they are asking us to do the same for MSFS right now and our teams are working hard on that.