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

https://ace-wiki.win/index.php/Why_Does_ChatGPT_Plus_Pricing_Swing_So_Much_With_Exchange_Rates%3F

ChatGPT Plus lists at $20 a month, but the final cost varies by country and device. That’s because VAT or GST taxes apply in many places, and if you buy through an app store, there’s an extra markup