ChatGPT Plus is listed at $20, but the actual price you pay can be between $13...

https://wiki-club.win/index.php/ChatGPT_Plus_Retention_Offer:_How_Do_I_Get_50%25_Off%3F

ChatGPT Plus is listed at $20, but the actual price you pay can be between $13 and $27 depending on where you subscribe. This difference happens because of extra fees like VAT or app store charges