Well, with the increased cost of enchanting, it costs up to quintillions of gems, but we can buy only in terms of quadrillions, which is 1000x lower. kinda...broken. I'd say it needs rework (the increase cost of enchanting was nice, but what's too much is too much)
https://docs.google.com/spreadsheets/d/11XUj41VRaR-SPxI0iP5k8qTxTbDcl78_CQPqeZtAZ04/edit#gid=1133146987 Made by someone here, just fill in the numbers (number of buildings,investors, upgrades...the buildings bought with AI are on the lower right side of the upgrade section) There are "hidden" columns, where are basic values, like completion time etc... MOAR NUMBERS!!