Position update
If you want to get a reputation here and want to sell your formula to members in this forum, you should really consider answering the questions above and giving out vouch copies for reputable members to test.
If it is actually profitable, you will have no problem selling it (and also no need to, to be honest)
Sorry for reply late because I am busy at work.
I've replied you earlier that maybe I can make a trial version. Just give me some time.
Thanks for your response!