ChatGPT Plus lists at $20 per month but the real cost often ranges from $13 to...

https://dibz.me/blog/is-there-a-chatgpt-plus-free-trial-i-can-click-to-start-1223

ChatGPT Plus lists at $20 per month but the real cost often ranges from $13 to $27 depending on where you subscribe. This difference comes from extra fees like VAT or GST taxes and app store markups on iOS and Android