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

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 can range from about $13 to $27. This difference comes from factors like taxes (VAT or GST) and extra fees from app stores such as Apple or Google