ChatGPT Plus has a list price of $20 per month, but the actual cost you pay can...

https://suprmind.ai/hub/chatgpt/pricing/chatgpt-plus-price/

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