Bundle / multi-pack page copy

I'm writing the product page for a bundle / multi-pack of {{product}}.

Bundle contents: {{contents}}
Single-unit price: {{single_price}}
Bundle price: {{bundle_price}}
Saving vs single units: {{saving}}
Why I built this bundle (the use-case): {{use_case}}
Who it's for: {{audience}}
Voice / vibe: {{voice}}

Write the page copy in this order:
1) HEADLINE (under 10 words) — leads with the use-case, not "Bundle"
2) SUB-HEADLINE (1 sentence) — the saving + the audience
3) WHO IT'S FOR (40 words) — speak to a specific buyer
4) WHAT'S INSIDE (bulleted, 3–6 items) — quantity + format + benefit
5) WHY THIS BUNDLE (60 words) — the reason these go together. The maths-of-the-saving belongs here, not in the headline.
6) ONE-LINE GUARANTEE (under 14 words) — what makes them feel safe to buy.

AU English. No "value-packed", no "must-have". Lead with the buyer's job, not the price discount.