Single-Bottle Buy → OTO Upsell
One frictionless buy, then one upsell. Compare the 3 OTO offers and watch first-order margin at any CAC.
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TinyShield
🛒0
Free shipping today · Ages 1+ · Pediatrician-reviewed
Triple BerryTinyShield Immune+ bottle
Immune+ Daily Drops
★★★★☆ 4.2 · 500+ families
$39.99/ 1oz bottle (~30 days)
One bottle. No commitment. Cancel nothing.
Choose your flavor
Triple Berry
Orange
🧪3rd-party
tested
🛡️NAC +
Quercetin
🚫Zero
sugar
🇺🇸Made in
USA
Secure checkout · 30-day money-back guarantee

First-order margin

Contribution after COGS, shipping & fees, minus CAC. Drag CAC to see where each flips.
Your CAC$35
$20best day ~$32$70
COGS $4/btl · shipping $6 (1 btl) / $8 (2 btl) · fees 3%. Subs also earn ongoing monthly contribution (shown as payback). Numbers are the proposed structure, easy to change.
The trade: Subscribe · 1 btl builds MRR but is first-order negative. Add 2nd bottle 50% is first-order positive at realistic CAC but one-time. 2-btl subscription splits the difference. The single-bottle buy box stays one decision either way.