The rate of a 100 dollar Google Play gift card can vary depending on several factors. In the open market, it is often influenced by supply and demand dynamics. When there is a high demand for these gift cards, perhaps due to the popularity of various apps, games, or digital content available on Google Play, the rate might be closer to its face value.

However, in some secondary markets or through certain resellers, the rate could deviate. Some might offer discounts in an attempt to attract more customers to buy or sell these gift cards. This could be due to their own business strategies or the need to move inventory quickly.

It's important for consumers to be cautious when looking for the current rate of a 100 dollar Google Play gift card. They should ensure they are dealing with reliable sources to avoid getting scammed or paying an unfair price. By doing so, they can make an informed decision when purchasing or trading these gift cards to get the best value for their money.