Say it with me. M-M-O's. This is how they tend to maintain free dlc/updates. And lowered cost of expansions. Look at WoW, ESO, SWTOR, DCU, etc. They all have some form of a micro transaction. And it works pretty well for them. I keep receiving monthly emails from SWTOR that new dlc has downloaded to the servers and that we should go to these new areas and try them out. And I only bought their starter pack.