Talk:Profitability/@comment-68.58.107.6-20110831170200/@comment-4111213-20110831174731

ROI is just a measure of profitability, which is what we've already charted. To be overly technical, the ROI on every building is infinite, since you can collect from them forever. However, TIme isn't the constraint on investment in Paradise Island, area is, which is why we've calculated Profit/Tile. Now, I understand what you're saying about the build/improvement costs of some buildings being much higher than others, but when it comes down to it, at some point in the future you're still going to end up with more money the higher the profit/tile you have. I think the kind of comparison you want to make could probably be made with a Break Even Time chart. So you know how long it takes each building to break even after it is built and fully improved. (How long until the building pays for the cost of having built and upgraded it so that it starts seeing a profit.) There is already a table for this in my spreadsheet, but the formulas never got completed. There is also the problem of calculating the cost of buildings that are purchased with €.Feel free to download a copy of the spreadsheet http://goo.gl/p3iEA and make it happen. :)