Free Realms free on PC and PS3

Like the name implies, Free Realms will be free on PCs and the PlayStation 3.
Free Realms, Sony Online's fantasy MMO for 10-14 year olds, will launch with a massive open world featuring a number of diverse areas.

On PC, your experience begins almost immediately: after loading up the website, all you'll need to do is provide your email and a username to enter the world.

As far as the PlayStation 3 is concerned, the MMO will be downloadable from the PlayStation Network. Total size is unavailable at the moment.

Sony will be try to turn a profit by charging customers for premium content. This will included,costumes, new items, and modifications for vehicles etc. SOE will also be able to make money through subscription based areas available at around $5.99 per month. These areas would not be needed to enjoy the game.