That's a great idea, giving people an incentive not to use the pay for vote bots, I have also been thinking and I think the only way for it to stop would be if there was a donate or a boost button on posts, people could boost a post by donating or the author of the post could directly boost there own post, this I think would slow down the Bots if not eliminated them. Boost button on posts, how can we make that happen :)
In fact I have just made a post about it.