If I will somehow get 7 more kobans this week I will buy 1000 Nutaku Gold which will put me at exactly 900 kobans and a 10x epic spin. I'd be willing to spend some money on this game but as others already said it's way to expensive. Like 40 € for a new girl just isn't worth it - also given the fact it might even be a non event girl...

But I guess it will net them lot of money as some whales won't be able to resist...