November 2nd, 2012, 06:43 PM
According to Wikipedia:
| According to the current EULA, game developers can sell their games by paying Epic the cost of $99 USD, and 25% royalty on UDK related revenue from all UDK-based games or commercial applications above US$50,000. |
So to answer your questions
Is UDK free?
Only if you're not making money off the game.
Is it possible
will I get all the money?
Only if your revenue is less than $50,000 (less $99)