So I ran some tests on bid bots and it seems that a lot of bots have updated their formula to account for changes to the STEEM economy. On top of that, because of falling prices, few people are using them which pushed bot owners to update their bots ROI. A lot of them are now offering minimum positive ROI. I have created a new sheet in excel that you can use to calculate ROI in SBD.
You can make a copy of this sheet in your own account and edit as you like. This sheet is read only
You will have to play with first 5 rows to get relatively perfect results. (Relatively because this sheet doesn't account for first 30 min. of voting.)
Current SBD print rate - You can get this value from steemd.com.
STEEM and SBD price - Get it from coin market cap website.
SBD Transfer - The amount you have transferred to voting bots in SBD. This sheet only works for SBD transfers.
Total Vote by bot - You can get this value from busy.org. Go to the post that you up-voted on busy.org and click the number next to thumbs up. It will show you the exact amount.
Once done, you should be able to get SBD, Liquid STEEM and SP estimates along with ROI.