Nintendo eShop 15 EUR
It is a secure solution, as you dont have to add your credit card details to the account or pay via bank account. Thanks to the card, you have balance to spend on games. You can purchase activation codes and enjoy chosen Nintendo games straight away.
The Nintendo eShop card can be used to buy games with use only on Nintendo Switch, Nintendo 3DS and Wii U systems. The balance can be shared across these systems, but it can be available only for one user account. There