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

https://zaneznae304.lucialpiazzale.com/what-is-the-cheapest-country-for-chatgpt-plus-right-now

ChatGPT Plus lists at $20 per month, but the actual price you pay can vary between $13 and $27 depending on where you subscribe. This difference comes from extra fees like VAT, GST, or app store charges added on top