Hi, I am quite confuse about taxes, fees, etc in amazon kindle.

I have some few books in several amazon marketplaces,I charge around 9 euros, and I sold 5, so the customer pay around 45 euros, BUT I get 15 euros in my bank account, this 66% in taxes or/and fees, is this normal?

I dont live in USA and I am not a USA citizen.

Of course I look for to pay less or nothing if possible(probably no).

Thanks so much!!!