At the posting time, the return on investment of bid-bots is trending higher for both SBD and Steem bids than yesterday. The break-even point is 1.73x for SBD and 1.63x for Steem.
At 2.25x for both SBD and Steem, you get more than 24% return, which will double your investment in only 3 consecutive voting according to the Rule of 72. When the voting cycle is 3.5 days, you get 100% return in 10.5 days.