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

https://www.bookmarkpage.win/the-listed-price-for-chatgpt-plus-is-20-per-month-but-the-actual-cost-you-pay

ChatGPT Plus is listed at $20, but the actual price you pay can vary from about $13 to $27. This happens because of factors like local taxes such as VAT or GST and extra fees on iOS and Android app stores