ChatGPT Plus is listed at $20, but the actual price you pay can range from...

https://www.bookmark-belt.win/the-listed-20-price-for-chatgpt-plus-often-varies-between-13-and-27

ChatGPT Plus is listed at $20, but the actual price you pay can range from about $13 to $27. This happens due to taxes like VAT or GST and extra fees charged by app stores on iOS and Android