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

https://hotel-wiki.win/index.php/Does_ChatGPT_Plus_Include_Image_Generation_and_How_Many_Per_Day%3F

ChatGPT Plus is listed at $20 per month, but the actual price you pay often varies between $13 and $27. This happens because taxes like VAT or GST and extra charges from app stores can add to the cost