Terms and Conditions
That is where you start. Take the bonus and divide it by the play requirement. For instance, I am playing another 50 in 200 bonus. Expected ROI of 400% - house edge. 20 times through the D and B, or 5000 in action. 200/5000 = .04, so you have a 4% edge. We look for max % bonus, with min action if possible.