The exchange rate between the US dollar (USD) and the Nigerian naira (NGN) is constantly fluctuating. To determine how much 150 USD is in naira, one needs to check the current exchange rate.

When looking at the value, it's important to note that the conversion is based on the prevailing market rate. Financial institutions, currency exchange platforms, or online tools can provide the most accurate up-to-date rate for this conversion.

As of a specific time, for example, if the exchange rate is [X] naira per USD, then 150 USD would be equivalent to 150 multiplied by [X] naira. This calculation gives an estimate of the value of the  Amazon gift card in Nigerian currency. However, it's crucial to keep in mind that exchange rates can change rapidly, so the amount in naira can vary from one moment to another.