Subscription pillows / sheets / protectors refresh, how does it actually lift LTV?

The recurring-revenue play that Brooklinen, Boll & Branch, Parachute, and Casper all run a variant of:

• Pillows lose loft at ~18 months and start collecting allergens / oils. Brooklinen and Boll & Branch both market the annual replacement directly. Subscription auto-ships a new pillow at 18-month intervals at a 15% loyalty discount.
• Sheets wear out at ~24 months with weekly washing. Auto-shipment of a new set at 24 months, customer-segment-aware to send the same size / colorway they bought last time.
• Mattress protectors lose waterproofing at ~12 months. Annual auto-ship at a 20% discount keeps the warranty valid on the mattress underneath.

The math: a $200 pillow + $250 sheets + $100 protector subscription replaces ~$550/year per customer who otherwise would have churned to a competitor at year 2. Customer LTV lifts ~35% on the cohort that opts in, consistent across the 4 mattress brands I have data on.

Magento build: Aheadworks Subscriptions ($499 one-time), Mageplaza Recurring ($399 one-time), or Adobe Commerce native subscriptions (since 2.4.6) for brands already on Adobe Commerce. Customer-segment-aware so wholesale-hospitality buyers don’t accidentally enroll in retail subscriptions. Opt-in surfaces on the PDP and in the day-30 trial-window email when the customer is already deciding whether to keep the mattress.