Do these work with GPT-3.5 or only GPT-4?

All prompts work with both GPT-3.5 and GPT-4/GPT-4o. GPT-4 produces significantly better results for complex prompts.

Can I use these for client work?

Yes! The commercial license allows you to use these for client projects, agency work, and internal business use.

What format are they delivered in?

You get a PDF guide with all prompts organized by category, plus a plain text file for easy copy-paste. Future updates are delivered automatically.

Do you offer refunds?

Yes — 100% refund policy with zero questions asked. Contact us and we will process your refund immediately.

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Refinance Your Car or Keep the Loan: 17-Formula Verdict Calculator

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✦ Built from analyzing top-selling products · QC-tested across multiple AI models

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What You Get

📄 50 Premium ChatGPT Prompts
📚 Organized by Category (Marketing, Code, Business)
🎯 Usage Guide & Best Practices
🔄 Lifetime Free Updates

Every free refinance calculator shows you one thing: a lower monthly payment. That number is trivially easy to game, because stretching 44 months into 72 makes almost any loan look cheap. This Google Sheet runs 17 live formulas on nine numbers off your statement and returns the parts nobody quotes you: total interest both ways, the dollar cost of those extra months, your break-even in months, whether your balance even clears the 125% loan-to-value ceiling lenders use, and what you truly pocket if you sell the car before the loan ends. Change one input and all four tabs recalculate. Just launched, with a 30-day money-back guarantee.