ChatGPT Plus lists for $20 monthly, but the real cost varies from about $13 to...

https://wiki-square.win/index.php/What_Is_the_ChatGPT_Deep_Research_Limit_on_Plus%3F

ChatGPT Plus lists for $20 monthly, but the real cost varies from about $13 to $27 depending on where you buy it. Prices differ because of taxes like VAT or GST and extra fees from app stores