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

https://www.fastbookmarks.win/chatgpt-plus-lists-for-20-but-actual-prices-vary-from-around-13-to-27

ChatGPT Plus is listed at $20 per month, but the actual price you pay often varies between $13 and $27. This difference comes from extra taxes like VAT or GST and the fees added by app stores on iOS and Android