Sorry EAWare but a single planet is not considered an expansion for any mmo. $10 isn't a lot of money but it shouldn't cost anything to subscribers to be honest. You have made a killing with the f2p shop, it's not like you're not making money off this game already! Not to mention you can't even purchase it with CC coins, just seems to me like another nickel and dime grab from your loyal fans.
It's not an expansion, it's a DLC. They're not even close to being the same thing.