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

https://ericksexcellentblog.image-perth.org/chatgpt-plus-message-limit-is-it-really-160-messages-per-3-hours

ChatGPT Plus is listed at $20 per month, but the actual price you pay can range from $13 to $27. This happens because of extra taxes like VAT or GST and fees added by app stores. For a better deal, compare the web version with iOS or Android prices