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 depending on where you subscribe. This happens because of factors like local taxes such as VAT or GST and extra fees added by app stores