The value of a 300 Xbox Live gift card in Nigerian Naira can vary depending on several factors. Exchange rates play a significant role. These rates are constantly fluctuating in the global market.

Typically, you would need to check with a reliable currency exchange service or a financial institution to get the most accurate conversion. They can provide you with the up-to-date rate at a given time.

Moreover, different platforms or stores might also have their own conversion rates or offers associated with the gift card purchase. So, it's essential to do thorough research and compare prices before determining exactly how much the 300 Xbox Live gift card is worth in Naira.