I totally get the wish to get more visibility and potentially get more money... however as I have seen several times on this platform, visibility does not necessarily mean quality.
You (as well as many others) end up paying someone to spread posts but for me this is missing the point. I am of course not judging the quality of your posts, am just talking in general - some posts end up with a lot of upvotes & resteems but, in my opinion, not for the right reasons.
I admit that it is frustrating to work on a post which you believe to be interesting and see that it only gets you a few upvotes (if any), but I guess I prefer to work my way up hoping to get a few more people interested each time.
Is it going to make me "rich"? No, but part of the pleasure of being on Steemit (in my case) is to share things I am interested in, or that speak to me (via my own posts or by commenting on other Steemians' posts).
Good luck to you ;)