ChatGPT Plus lists for $20, but actual prices vary from around $13 to $27...

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

ChatGPT Plus lists for $20, but actual prices vary from around $13 to $27 depending on your location. This happens because taxes like VAT or GST get added, and app stores on iOS and Android often charge extra fees