Look at this for sample. This was a transaction made 2 hours ago.
Transfer 0.222 STEEM to stokjockey| @tipU upvote data for: Essayeur Fondeur Made In Switzerland United States Landmark Buildings On Silver Bars Serialized | payment used: 3.778 STEEM -> upvote value: $3.608 | refunding: 0.222 STEEM | additional 50% of @tipu curation reward goes to @stokjockey | good luck in todays STEEM MONSTERS lottery! Yesterdays winner: @silver-hammer - congrats! :) PS. You can check current max upvote and upvote profit at @tipU profile: https://steemit.com/@tipu
the spent value is 3.778 steem, the vote was 3.608
3.608 x.75= 2.76
2.76 ÷ .76(not really the value of steem by the moment but lets assume that its .76 since its the lowest value shown today)= 3.58
see?
3.58-3.77=0.19
I lost .19 the only chance that I have to at least make that loss is to rely on the curation reward of 25 percent in the total post reward. Before, whenever I use this formula of solving ROI, I always get the right value of at least 10 percent, now, its negative. You know, tipu isnt the only voting service that has negative ROI like this, we have appreciator, buildawhale, jerrybannfield. I dont complain about it, I even appreciate that these services are there since it gives us options. But of course people would appreciate it more if there is a 10 percent ROI since it not only encourages people to stack steem and sbd it also forms as a safety net in the process specially in a bear market like this where a lot of bags are just being holded.
Hm, why do you multiplay the upvote value by 0.75 if @tipu message clearly states that 50% of curation coming from the upvote goes to the post author? Curation % depends on the moment of upvote and is not always 25%.
3.608 x (0.75 + 0.25/2) = 3.157
3.157 / 0.76 = 4.153
4.153 - 3.77 = 0.383
This looks like a positive ROI to me.