I have that same question in mind,so I did what I usually do when something is not known to me i.e. I started Googling it.
And I got this steemit post
https://steemit.com/steemit/@abrianawilson/top-3-highest-earning-posts-in-steemit-com
But this post is about 6 month old and data is changing daily.
So probably we can observe a drastic change in data.
Hence,what's the highest paid ever SteemIt post you've seen? Share it on the comment section so all Steemians can study their winning formula.
I know this is ironic to post asking about the highest paid steemit post. LOL😂