The listed ChatGPT Plus price is $20, but the actual cost often varies between...

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

The listed ChatGPT Plus price is $20, but the actual cost often varies between $13 and $27. This difference comes from factors like local taxes such as VAT or GST, and extra fees applied by app stores on iOS or Android