I have purchased a lot of votes in the past Knowledge has helped me see the wrong in my doings.
Nowadays, 18+ million SP votes at 100% every 2.4 hours:
https://steemit.com/utopian-io/@abh12345/how-much-available-sp-is-there-for-steemit-com-content
At this point, I would rather it be done in secret, as the efficiency of going this route will never be as draining as the bot situation.