ChatGPT Plus officially costs $20 a month, but the actual price you pay can...

https://station-wiki.win/index.php/ChatGPT_Plus_Deep_Research_Not_Working:_Did_I_Hit_the_10_Per_Month_Cap%3F

ChatGPT Plus officially costs $20 a month, but the actual price you pay can vary from about $13 to $27. This difference comes from factors like taxes such as VAT or GST and extra fees charged by app stores on iOS and Android