Hi guys,
Thanks to Tramp and Nicholost I was able to fill out the estimated building upgrade costs for all buildings. I say "estimated" because there's a strange rounding algorithm being used which I've yet to fully figure out.
I put the data up in a new spreadsheet, similar to the one I use myself. If you make a copy and fill out your base's details, the sheet will help you calculate the best purchase/upgrade option available to you.
Please check out the Readme tab for more info on how to best use the spreadsheet.
https://docs.google.com/spreadsheet/...E9wTGJ5ZGhyc3c
Enjoy.
-itz