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

https://highstylife.com/i-keep-hitting-chatgpt-limits-should-i-start-a-new-thread/

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