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

https://smoothdecorator.com/why-did-openai-keep-chatgpt-plus-at-20-since-february-2023/

ChatGPT Plus is listed at $20, but the actual cost you pay can range from about $13 to $27. This variation comes from factors like VAT or GST taxes and extra fees charged by app stores such as Apple’s or Google’s