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

https://www.echobookmarks.win/chatgpt-plus-is-listed-at-20-per-month-but-the-actual-price-you-pay-can-range

ChatGPT Plus is listed at $20 per month, but the actual price you pay often varies between $13 and $27. This difference comes from extra taxes like VAT or GST and the fees added by app stores on iOS and Android