Take a take an Normal size planet.(With all these inactives floating around it should be easy. You build 10k def on it(400 bill) Then you upgrade the size once to Above Average where you can sell the defs for 500 bill when you only payed 400 bill for them. Making the extra 100 bill.
Down fall is that you have to take a Normal size planet but for doing so you get 100 bill naq so its well worth it
Hope This Info Helped Someone out there whom didnt know about it.























