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

https://www.mediafire.com/file/yjut74llakej1hf/pdf-37467-61545.pdf/file

ChatGPT Plus is listed at $20 per month, but the actual price you pay can range from about $13 to $27. This difference comes from extra fees like VAT or GST, and app store charges on iOS and Android