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

https://www.unitedbookmarkings.win/chatgpt-plus-is-advertised-at-20-per-month-but-the-actual-price-can-range

ChatGPT Plus is listed at $20 per month, but the actual price you pay can vary between $13 and $27. This depends on factors like local taxes (VAT or GST) and platform fees if you subscribe through the iOS or Android app stores