The rate of a 500 USD Amazon card can vary depending on several factors. Firstly, it might be influenced by the current market conditions. If there is high demand for Amazon gift cards, the rate could potentially be closer to face value or even slightly above it.

Secondly, different platforms or resellers may offer different rates for these cards. Some might offer a more competitive rate to attract customers, while others could have a markup. It's important to do some research and compare the rates available from various sources.

In addition, economic factors such as inflation and exchange rates can also play a role in determining the current rate of a 500 USD Amazon card. For example, if there is significant inflation, the purchasing power of the card might be affected, and this could impact the rate at which it is traded. Overall, staying informed about these factors can help in understanding the current rate of a 500 USD Amazon card.