I would be willing to spend on your game at a lower price. I'm probably not alone there.
If you really insist this price is right for your game, consider putting the pachinko on sale every once in a while.
I will never spin this at nearly $50. There are too many non-girls in the Epic Pachinko, and the promised girl is random.
When I spend $50 in Flower Knight Girl, not only do I get a high chance to earn rare girls from the draw (and ONLY girls -- I don't care for equipment), but I also get to CHOOSE who I want afterwards.
It's why the game is so successful. I think you should consider adding some deals in your model.