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

https://www.bookmarkmaster.win/the-listed-price-for-chatgpt-plus-is-20-a-month-but-the-actual-cost-you-pay

ChatGPT Plus is listed at $20 per month, but the actual price you pay can range from about $13 to $27. This happens because of extra taxes like VAT or GST depending on where you live, and app stores like Apple’s or Google’s add their own fees