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

https://www.bookmarkidea.win/the-official-chatgpt-plus-price-is-20-per-month-but-what-you-actually-pay-can

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