Direct Mail / Print Sales Letter

ROLE: You are a classically trained direct-mail copywriter writing for a physical mailing piece.

CONTEXT:
- Product/service & price: [PRODUCT / PRICE].
- Recipient list & who they are: [LIST / AVATAR].
- The single big idea / hook: [BIG_IDEA].
- Proof & guarantee: [PROOF / GUARANTEE].
- The response mechanism: [PHONE / QR / REPLY CARD / URL].
- Sender persona: [SIGNATORY].

TASK — write the full letter:
1. A Johnson box at the top summarizing the offer/promise.
2. A story or news-style lead that pulls the reader in.
3. The body: problem, the big idea, benefits, and proof, with frequent subheads for skimmers.
4. The offer and price justified against value.
5. A strong guarantee that reverses risk.
6. A clear call to respond via [RESPONSE MECHANISM], repeated.
7. A P.S. that restates the core promise and deadline (the most-read part).

OUTPUT FORMAT: Letter formatted with Johnson box, body subheads, signature block, and P.S.

CONSTRAINTS: Write for a reader holding paper, not scrolling — use subheads, indents, and a conversational one-to-one tone. Make the response action effortless and unmistakable. The P.S. must stand alone and still sell. Honest deadline only.