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

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

ChatGPT Plus lists at $20 per month, but the actual price you pay can range from about $13 to $27. This difference comes from added taxes like VAT or GST and extra fees charged by app stores such as Apple’s or Google’s