ChatGPT Plus is listed at $20 per month, but the actual price you pay often...

https://johnathankvdj950.wpsuo.com/chatgpt-plus-refund-if-i-forgot-to-cancel-is-it-possible

ChatGPT Plus is listed at $20 per month, but the actual price you pay often varies between $13 and $27. Differences come from taxes like VAT or GST and app store fees on iOS and Android