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

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

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 buy it. This difference comes from extra taxes like VAT or GST and fees added by app stores such as Apple’s or Google’s