ChatGPT Plus is listed at $20, but the actual price can range from $13 to $27...

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

ChatGPT Plus is listed at $20, but the actual price can range from $13 to $27 depending on where and how you subscribe. Differences come from taxes like VAT or GST and extra charges from app stores