This problem has been around for a verrrrry long time and I'm going to suggest this fix again. When I have a Colony Base and an EE Base(for example) on the same planet and I'm selling commods off the EE Base it also sells to the Colony which I don't want. I only want it to sell to slaves and have the Colony sell to the Planet for a higher price and more profit.

I personally think it's a problem that the Colony tab shows up on a non-Colony base but a way to work around that is to have 3 different sell categories rather then one. Have a "sell to planet", "sell to players", and "sell to slaves". Have check boxes for them so u can combine 2 or all 3.

Another option would be a "take" option to slaves which would also solve this problem.