Now, when Zone comes out, you can either make it or break it. With iEra, you released the paid version first instead of the free version. If you released the free version first, you would of gotten a lot more traffic, since iClassic averages about 1k people on and iEra about 600, they all would of wanted to try out the new server. But only about 1/4 of them pay, so that hurts the playercount by a lot for the new server. Plus, if it was free off the start, everyone would download it, and increasing the downloads of it may put it in the top 300, where lots of people would see it, and be potential customers in the long run.
tl;dr release free version of iZone first so more people download it off the start to put it in top 300 apps.