This new is coming from Avillon.
We have noticed that there are currency display issues with in-app purchases,
showing EUR 0 or multiple 0s at the end of the actual price.
We are currently looking into it, and we will keep you posted via additional details at this post.
Meanwhile, we suggest you not to purchase if the price is displayed as described above.
We apologize for the inconvenience
and we will try our utmost for better game service.