I want my question answered, and I'm willing to pay. Is there an established way for me to credibly promise payment in a way that will induce an answer?
Has this been done before? Thank you.
No. You cannot, and you may not, and the moderators may take action if this advice is unheeded.
We do not want to be a "write my thesis" or "do my research" or "solve my homework" site. We are trying to not be one.
Any and all attempts to change that will have dire consequences.