ChatGPT Plus lists for $20 a month, but the final cost varies by country and...

https://wiki-net.win/index.php/Does_ChatGPT_Plus_Include_Custom_GPT_Creation_or_Only_Access_to_Other_People%E2%80%99s_GPTs%3F

ChatGPT Plus lists for $20 a month, but the final cost varies by country and device. That’s because taxes like VAT and GST get added depending on your location. If you subscribe through an app store, expect a higher price due to their commission markup