Do you regularly promote your posts ?
I do, and each time I end up going to the promoted page and clicking through each story to figure out how much I need to pay to get myself visible within the top 20.
It's slow and annoying, so I made a tool to speed the process up :

View live version
It's open source on github, as part of the steemviz git repo and it currently lives at :
steemviz.com/promo
I'd like to see a much more efficient market for promotion, with tighter pricing so we can start to get some real price discovery for what this sort of visibility on steemit is worth.
Please, let me know if you have any suggestions for improvements :)
Edit: Fixed a coding fail, now we have 3 decimal places as intended originally
Edit 2: Added earnings column

Lets connect !
steemit / twitter / gab.ai / keybase