ChatGPT Plus lists at $20 a month, but the final price varies by country and...

https://wiki-zine.win/index.php/Does_Advanced_Voice_Have_a_Cap_on_ChatGPT_Plus%3F

ChatGPT Plus lists at $20 a month, but the final price varies by country and device. That’s because taxes like VAT or GST and extra fees from app stores can add to the cost