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

https://collinscoolthoughts.raidersfanteamshop.com/chatgpt-go-vs-plus-is-the-12-difference-worth-it

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