The listed price for ChatGPT Plus is $20 per month, but the actual cost can...

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

The listed price for ChatGPT Plus is $20 per month, but the actual cost can range from about $13 to $27 depending on where you subscribe. This difference is mainly due to extra taxes like VAT or GST and app store fees that Apple and Google add on top