When playing a game like They Are Billions it helps to know the relative advantage and cost of each troop and each building. How quickly will upgrading a tent to a cottage take to pay off? Cuz surely it’s a profitable upgrade, but if I do it just two days before the final wave, will I actually get money out of it? Should be easy! Let’s just take all the units and shove it in a spreadsheet and convert everything to gold. But… there’s a problem.