ChatGPT Plus is listed at $20, but the actual amount you pay can range from...

https://nova-wiki.win/index.php/When_Should_I_Upgrade_from_Plus_to_Pro%3F

ChatGPT Plus is listed at $20, but the actual amount you pay can range from about $13 to $27. This depends on where you buy it. For example, buying through the web avoids extra fees that come with app stores like Apple’s and Google’s