ChatGPT Plus is listed at $20 per month, but the actual price you pay can range...

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

ChatGPT Plus is listed at $20 per month, but the actual price you pay can range from about $13 to $27 depending on where you buy it. This difference comes from factors like local taxes (VAT or GST) and fees added by app stores, like Apple or Google Play