ChatGPT Plus has a $20 list price, but the real cost usually varies between $13...

https://www.bookmarking-online.win/chatgpt-plus-is-listed-at-20-but-the-actual-price-can-range-from-13-to-27

ChatGPT Plus has a $20 list price, but the real cost usually varies between $13 and $27 depending on your location and platform. This happens because of taxes like VAT or GST and extra fees charged by app stores, especially on iOS and Android