The listed ChatGPT Plus price is $20, but real costs vary from $13 to $27...

https://www.list-bookmarks.win/the-advertised-chatgpt-plus-price-is-20-but-the-actual-cost-often-varies

The listed ChatGPT Plus price is $20, but real costs vary from $13 to $27 depending on where you buy it. Differences come from taxes like VAT or GST and extra fees charged by app stores