Copywriting / Sales Letters

Write powerful guarantees that remove buying risk — money-back, performance-based, try-it-for-free, and lifetime guarantees — with scripts for each type.
Difficulty: Intermediate
Model: GPT-4 / Claude / Gemini
Use Case: Guarantee Copy, Risk Reversal, Conversion Optimization
Updated: May 2026
Why This Prompt Exists
Most guarantees fail because they’re weak or hidden.

You get:

  • “30-day returns” (fine print, no confidence)
  • guarantees buried in the footer (no one sees them)
  • no emotional reassurance (just legal language)
  • generic guarantees that don’t address specific fears
  • guarantees that actually increase refund rates (poorly designed)

But a guarantee is not a legal formality.

It is a conversion machine.

  • Money-back guarantee: standard but effective
  • Performance-based guarantee: “You’ll get X or your money back”
  • Try-it-for-free: sample period
  • Lifetime guarantee: high confidence signal
  • The right guarantee can double conversion rates

Without a strong guarantee, you leave buyers afraid to pull the trigger.

This framework forces AI to write guarantees that remove fear.

The Prompt
Assume the role of a direct response copywriter who knows that a strong guarantee can double conversion rates.

Your task is to write guarantee copy for your offer.

Generate guarantee options for EACH type (adapt to your offer):

1. MONEY-BACK GUARANTEE (30, 60, 90 days)
   - Standard, low-risk for you
   - Script: "If you're not satisfied for any reason..."

2. PERFORMANCE-BASED GUARANTEE
   - "You'll get [specific result] or your money back"
   - Requires measurable outcome

3. TRY-IT-FOR-FREE
   - Sample period before full payment
   - Script for the offer

4. LIFETIME GUARANTEE
   - Highest confidence signal
   - Only for products that can support it

PLUS:
- Guarantee placement recommendation (where to put it)
- Refund rate prediction (will this increase refunds?)

INPUTS:

Product or Service:
[DESCRIBE]

Offer Price:
[INSERT $]

Measurable Result (if any):
[E.G., "Double your open rates"]

Your Refund Policy History (if known):
[E.G., "Current refund rate is 3%"]

Risk Tolerance:
[HIGH / MEDIUM / LOW]

RULES:
- Each guarantee must include the exact script
- Performance-based guarantee requires a measurable result
- Placement recommendation must be specific (e.g., "next to the price and again in the PS")
- Refund rate prediction must be honest (stronger guarantees may increase refunds)
- If you can't offer a performance guarantee, explain why in the output
How To Use It
  • A stronger guarantee often increases conversion more than it increases refunds.
  • Place the guarantee next to the price and again in the PS.
  • Performance-based guarantees work best for outcomes you can control.
  • Lifetime guarantees signal confidence but can create long-term liability.
  • Test guarantee strength — a 90-day guarantee often outperforms 30-day.
Example Input

Product or Service: Online course — “Facebook Ads That Actually Work” ($497)

Offer Price: $497

Measurable Result: “Reduce your cost per lead by at least 50%”

Your Refund Policy History: 30-day money-back guarantee, 4% refund rate

Risk Tolerance: MEDIUM

Why It Works
Most guarantees fail because they’re weak and hidden.

This framework improves outcomes by forcing:

  • multiple guarantee types (test what works)
  • exact scripts (copy-paste ready)
  • placement recommendations (visibility)
  • refund rate predictions (honest assessment)
  • result-specific performance guarantees

Great guarantees don’t increase refunds — they increase confidence, which increases sales.

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