ChatGPT Plus is listed at $20, but the actual price you pay can be between $13...

https://wiki-planet.win/index.php/Are_Modified_Android_Apps_Real_ChatGPT_Plus_Access%3F

ChatGPT Plus is listed at $20, but the actual price you pay can be between $13 and $27 depending on where you subscribe. This difference happens because of extra fees like VAT or app store charges