Do I need to buy the game again?

I mean I have a working copy and everything is fine with it, but with all this additional content that keeps coming I’m starting to feel like I owe them money.

If other game companies planned to release 12 new subclasses they’d release them 1 at a time over 12 months and charge 5.99 per subclass.

I don’t know how to check how many hours I’ve played, but I’m sure it’s a lot.