I am simple mind user.
I am a veteran with some technical knowledge.
I am in no favor of any partisan whatsoever.
I am used to be able to just enjoy add-on(s) and the things those wonderful developer worked so hard to share with others.
This add-on is not one of them.
I do understand no one wants to work for free in such a hard time as whoever you & your god knows it.
So, it would only be acceptable courtesy to just mention right upfront that your add-on is not to use for free.
I am sure I am clear on the issue to everybody who cares to read.
Also, I do not do well to respond with people whose illiterate tendency had heavily influenced their communication pattern. Neither are also applicable to those overwhelm with ambiguity and those with complex transfiguration.