I don't think any MMO gives 30 day free trials. 14 days is about standard for the industry, some give 10 days or less and I've played one that only gave eight hours. In contrast, you can get a 21 day trial for EVE if you use steam or have a current player send you a buddy key.

If you mean the 30 days that come free with the initial purchase of most MMOs, EVE does do that too. If you buy the game, the initial purchase price includes a free month. If you upgrade from a trial to a full account by just adding a subscription, I'm not sure if you get those 30 days (pretty sure it's just for new accounts).