ChatGPT Plus officially costs $20 per month, but the actual price can vary from...

https://alexisqoem867.trexgame.net/why-does-chatgpt-plus-cost-more-on-iphone-than-on-the-web

ChatGPT Plus officially costs $20 per month, but the actual price can vary from about $13 to $27 depending on where you subscribe. This happens because of factors like VAT or GST taxes and extra fees added by app stores like Apple or Google