Direct Trading Limitation

Does anybody know what limitations apply to free accounts regarding GC transactions? I tried to bid GC for pop in the direct trade page and the system wouldn't let me.

Chris,
I am not sure what the limit is for a free player but I remember when I was playing for free there was a point in which it stopped me from bidding GC for any more population.

Stopped completely? So there's no point whatsoever to compete any more for high positions and gc?

Did you receive a message to the effect that you cant buy more pop with a free account?

I wasnt to sure you could even win GC's with a premium account.

I tried to bid GC for 1,000,000 pop and got a message saying "Please become a Premium Member to trade more on the Cash Market".