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

https://telegra.ph/ChatGPT-Plus-File-Upload-Failed-Is-It-the-20MB-Image-Limit-08-05

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 subscribe. This difference is mainly due to taxes like VAT or GST and fees added by app stores on iOS or Android