Have no idea what the budget was for it, but 300k is only like $15m for it, and that's not allowing for any of the platform cuts or anything. Now, they could probably get something from it via the subscriptions as well. Any word on what it cost to make?
I really hoped people would give this one a shot, it might open the door for more 2D-ish content from major publishers. I would never expect this type of game to do millions and millions, but hopefully it can cover the budget and make a little on top.