Tach I have 35 euro credit in the Nintendo e-shop and would like to buy me a game for 39.99 euro now raises the question of whether Nintendo when linking a Paypal accounts the full sum so the entire 39.99 euro deducted or only the difference So 4.99 euro.
Paypal first checks if you have enough credit on your Paypal account.
in your case it is only 35,00 euro.
therefore Paypal will deduct the 35,00 euro and the remaining 4,99 euro from your bank account by direct debit.