The conversion of a $75 Amazon card to Nigerian Naira depends on the current exchange rate. Exchange rates are constantly fluctuating, which means the amount in Naira can vary from day to day.

To determine the exact value, one would need to check a reliable financial source such as a bank or a currency exchange website. These platforms provide the most up-to-date exchange rates. For example, if the exchange rate is $1 = ₦400, then a $75 Amazon card would be worth ₦30,000.
However, it's important to note that exchange rates are influenced by various factors including economic conditions, central bank policies, and global market trends. So, it's advisable to keep an eye on the rates before making any conversions. This ensures that you get the most accurate value when converting your $75 Amazon card into Nigerian Naira.