income planet bug

[™Fûr¥]

my lower income planet cost more to upgrade income than my higher one lol.

[Hansbrough]

I suspect this isn't a bug. If the planets are different size, the smaller one is always more expensive to upgrade, no matter what type of planet you're working with.

[DUDEY]

you get a % increase of stats on bigger planets
say you had a 1bill strike planet that is small upgrade it to the next size you will have 1,2bill strike or something (I cant remember how much % you get tho)
I think its in the help&rules page somewhere