ChatGPT Plus is listed at $20, but the actual price can range from $13 to $27...

https://charliekzxa221.huicopper.com/chatgpt-business-pricing-is-it-25-per-seat-annually

ChatGPT Plus is listed at $20, but the actual price can range from $13 to $27 depending on where and how you subscribe. Differences come from taxes like VAT or GST and extra charges from app stores