The rate of a 20 USD Amazon card today can vary depending on several factors. One of the main aspects is the current market conditions. In a stable economic environment, the rate might be relatively consistent. However, fluctuations in currency values and supply - demand dynamics can have an impact.

If there is high demand for Amazon cards, especially around peak shopping seasons or due to special promotions, the rate could potentially be affected. Sellers might adjust the price they charge for the cards to account for this increased interest. On the other hand, if the supply of these cards is abundant, the rate might be more competitive.
Moreover, different platforms or sources from which one can obtain the 20 USD Amazon card can also influence the rate. Some might offer it at face value, while others could add a small premium or discount. It's essential for consumers to compare and look for the best deal when considering purchasing a 20 USD Amazon card today.