ChatGPT Plus lists at $20 a month, but the final price varies by country and...

https://simonsnewchat.rivetgarden.com/posts/what-is-chatgpt-go-for-8-and-who-should-pick-it-over-plus

ChatGPT Plus lists at $20 a month, but the final price varies by country and device. That’s because taxes like VAT or GST and extra fees from app stores can add to the cost