Talk:Gems/@comment-122.162.57.72-20130621124406/@comment-5709722-20130621140020

Your best income building needs to have 6 times the amount of the six following best income buildings. Everything above a 10% emerald is better.

e.g.

six buildings are producing $100.000 in a certain period of time

one building is producing $600.000 in the same period of time

5% of 1.2 million = 60.000

10% of 600.000 = 60.000

The best educated guess could be made with income per hour including repairs.