Untimed Capped Free-Trials should become standard for all future MMOs. They are very much a great marketing device.

10 levels isn't much. You can make 10 levels in a day (or two) of playing, especially if Tier 1 is as packed as it was when I used to play (as Tier 1 was the most fun tier).

But to be able to test out a game as much as you want, even if you stop gaining exp at level 10 and can't go to tier 2, is pretty amazing. I'd be more willing to try new games if they had free trials like these.