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

https://www.bookmark-fuel.win/chatgpt-plus-is-officially-20-per-month-but-the-actual-price-you-pay-can-vary

ChatGPT Plus is advertised at $20 per month, but the actual price can range from about $13 to $27 depending on where you subscribe. This difference comes mainly from taxes like VAT or GST, and extra fees from app stores like Apple or Google