Talk:RR3 Wiki:Upgrades Strategy For 100% Completion/@comment-27798333-20160505055525/@comment-26249703-20160505072452

The margin equals Rewards - Cost. For Sunoco Championship Series, for example, that's 24-58, giving -34 Gold. A positive margin means you will get more out of completing the series than what you will have to spend. Sometimes, when it is close to being a neutral or positive investment, it's denoted by a dark yellow background and an explanation. When there is a duplicate strategy (the case for the F14 T, Ford Shelby GT500 and 2013 RSR), depending on which series is completed first, you will not have to spend that cost in the other, meaning a better return on investment in the second one, if that makes sense.