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

https://wiki-tonic.win/index.php/ChatGPT_Plus_File_Upload_Failed:_Is_It_the_20MB_Image_Limit%3F

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