TERM
Surebet ROI
Return on turnover: the ratio of a surebet's guaranteed profit to the total amount staked, equal to 1 / Σ(1/k) − 1.
A surebet's ROI (return on investment) is calculated from the sum of inverse odds: with Σ = 0.964, ROI is 1 / 0.964 − 1 = 3.7%. On a 10,000 ₽ bankroll, that's 373 ₽ of profit whatever the outcome.
According to Dozor data for September 6, 2026, the median ROI of the surebets found was 3%, three quarters were below 6%, and nine in ten below 9%. An ROI above 10% almost always means an error in one book's line: the bookmaker is entitled to settle such a bet at odds of 1. A surebet's lifetime barely depends on its ROI.