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

https://zulu-wiki.win/index.php/How_Early_Should_I_Cancel_ChatGPT_Plus_to_Avoid_Being_Charged%3F

ChatGPT Plus is listed at $20, but the actual price you pay can range from about $13 to $27. This difference comes from things like VAT or GST taxes in your region and extra fees app stores add on iOS or Android