# Subscribe & Save — Reasoning & Recommendations
**Companion to:** [bundle-concepts.md](bundle-concepts.md), [saved-cart-concepts.md](saved-cart-concepts.md), [recently-purchased-concepts.md](recently-purchased-concepts.md)
**Live preview:** https://demo.thecxlabs.com/v2/pdp.html
**Date:** July 2026
This document explains the recommended Subscribe & Save (auto-ship) pattern for `shop.usaclean.com`, the BigCommerce capabilities and apps that map to it, and a phased path from the PDP affordance already built in the prototype through account-side management to an enterprise / replatform-era program. It is the natural sequel to [saved-cart-concepts.md](saved-cart-concepts.md), whose Phase 3 ("schedule a recurring order") is this feature.
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## TL;DR
Ship the **PDP Subscribe & Save affordance that's already mocked up** in [`v2/pdp.html`](../v2/pdp.html) — a One-time vs. Subscribe & Save purchase-mode toggle, a delivery-frequency select (Every 30 / 60 / 90 days / 6 months), an expandable terms panel, and an Add-to-Cart button that relabels to "Subscribe & Save" — and pilot **one** subscription app on a narrow set of high-repeat consumables (pads, brushes, squeegee blades, detergents, filters). Everything the buyer sees can ship on Stencil; the recurring engine cannot, because **BigCommerce has no native recurring-billing or scheduled-order capability** — that has to come from an app or custom middleware.
**The single most important thing this brief must resolve before promotion is the discount-interaction rule.** The prototype PDP already shows *two* overlapping discount mechanics side by side — a 10% Subscribe & Save price ($42.40 → $38.16) and a volume tier block (5% at 6–11 units, 15% at 12+) that literally says "stacks across the cart line." Applied naively, a 12+ subscriber would compound to ~23.5% off national-account pricing that's often *already* contract-negotiated. The recommendation is **contract price wins, then greater-of (promo vs. volume), never naive stacking** — and the terms panel already carries a "does not stack" bullet that the live pricing engine must actually enforce.
**The second pivotal filter is Net-30.** Most subscription apps assume a card-on-file auto-charge. USA Clean's national accounts pay on Net-30 invoice terms — for them, "auto-ship" is a *scheduled-order* problem, not a *card-billing* problem. The B2B pattern that fits Net-30 is to **decouple the recurring event from the card charge** — the subscription app generates the order and hands billing to the ERP / a net-terms provider on the buyer's terms (see [Optimum7](https://www.optimum7.com/blog/custom-payment-terms-for-b2b-subscriptions-in-shopify-and-bigcommerce-a-practical-guide.html)). This is an *architectural approach*, not any single app's advertised out-of-the-box feature. Rebillia is a reasonable lead candidate to validate it against, but **confirm net-terms / PO support directly with Rebillia before committing** — it is not stated on their public listing. That filter is what narrows the worth-it-now shortlist.
| Phase | Surface | What it solves | Effort |
|---|---|---|---|
| **Phase 1** _(Pilot)_ | PDP Subscribe & Save affordance (this prototype) + one subscription app on high-repeat consumables | Habitual reorder of wear parts: "ship me pads every 60 days so I stop forgetting" | Medium — UI is built; the app is the new dependency |
| **Phase 2** _(Data-gated)_ | Account-side manage-subscription (skip / reschedule / swap / cancel), standing orders for national accounts, per-category cadence tuning | The terms already promise self-serve management; national accounts want a pre-authorized recurring PO | Medium–High — app portal integration + role gating |
| **Phase 3** _(Future)_ | Catalyst / headless subscription surfaces, or an enterprise program (Ordergroove-class) / consumption-based VMI (KeepStock-style) | Rich stateful management, dynamic price recompute, telemetry-driven replenishment | Highest — replatform-era; only if the program earns it |
> **Why Phase 1 is safe to ship.** The affordance is a faithful UI mock that already lives in the prototype and consumes only existing `--caster-*` tokens — nothing in shared Caster CSS changed. It captures *intent* (mode + cadence). Turning that intent into a real recurring order needs the app, which is the one net-new dependency. The rest is glue.
**Decision of record:** (pending — no client decision yet; see [docs/decisions.md](decisions.md))
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## Current state
The PDP prototype at [`v2/pdp.html`](../v2/pdp.html) ships a complete, working purchase-mode selector — not a static badge:
- **A purchase-mode radiogroup** (`.buy-mode`, `role="radiogroup"`) with two option cards: **One-time** (default, `.is-selected`) and **Subscribe & Save**. Each card wraps a visually-hidden native radio (still focusable and arrow-navigable), a faux radio dot, a title, and a right-aligned price. The subscribe card carries a "Save 10%" flag pill and a strikethrough price (`$42.40 $38.16`).
- **A delivery-frequency select** (`#subFreq`) revealed when Subscribe is chosen: Every 30 days / **Every 60 days (default)** / Every 90 days / Every 6 months.
- **An expandable subscription-terms panel** (`#subTerms`) behind a "View subscription terms" disclosure button with correct `aria-expanded` / `aria-controls`. Its five bullets: (1) 10% applies to every recurring delivery; (2) card charged when each order ships on the chosen cadence; (3) change / skip / cancel anytime, no fee; (4) price excludes tax & shipping; (5) **volume pricing does not stack with the subscription discount**.
- **A relabeling Add-to-Cart button** — `#pdpAtcLabel` swaps from "Add to Cart" to "Subscribe & Save" on mode change, via two tiny vanilla `onchange`/`onclick` handlers.
The price appears in three synced places (the `.pdp-price` block, the `.pill-accent` "↺ Subscribe & Save 10%" badge, and the option-card price).
### What's missing (what the prototype fakes)
A live build has to close four gaps the mockup papers over:
- **The frequency select does not recompute price.** Only the mode toggle wires behavior; changing cadence does nothing to the number.
- **No persistence or cart integration.** The choice isn't recorded anywhere — there's no subscription contract, next-ship date, or line-item cadence field.
- **The no-stacking rule is copy-only.** Bullet 5 is a promise, not an enforced pricing rule. This SKU genuinely shows both a Subscribe & Save price *and* a volume-tier block, so the collision is real.
- **No account-side management surface exists.** The terms promise skip / reschedule / cancel, but there's nowhere to do it yet.
> **Why it matters:** Floor-care is an unusually strong subscribe candidate because the catalog is mostly wear parts on predictable duty cycles. Facility managers already reorder pads and brushes on a rhythm — the feature just removes the "did I forget to order pads?" failure mode. But the same buyers are on Net-30, which means the consumer card-on-file model that every subscription app assumes is the *wrong* default for this audience. Getting the affordance right is easy; getting the billing model and the discount math right is the actual work.
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## References
What Subscribe & Save / auto-ship looks like across the distributors and consumer gold-standards worth lifting from, ordered by usefulness to USA Clean.
### Staples AutoRestock — the closest direct analog
A PDP-level subscribe affordance presented as an alternate purchasing option on the product page, with a tiered save-more-when-you-subscribe-more discount: **5% off for 1 subscribed item, 10% off for 2+**. Free delivery on AutoRestock orders; pause / skip / cancel anytime. Critically for multi-site accounts, it supports **multiple subscriptions each with a different address, payment method, and schedule**, and exposes dual entry points — the PDP option *and* a "Lists → Auto Restock" account hub. This validates USA Clean's inline PDP toggle and argues directly for a companion account-level "Manage subscriptions" surface (Phase 2) plus multi-address support.
### Amazon Business Subscribe & Save — the consolidation-tier + billing model
A two-tier stacking discount: **~5% base, up to 15% when 5+ subscriptions arrive the same day to the same address** — an explicit incentive to batch a site's consumables into one delivery. The frequency picker is a single editable "Auto-delivered: [frequency]" link opening one panel to change quantity, cadence, and next-delivery-date together; cadence spans 2 weeks to 6 months; skip is one click with no penalty. The **price charged is the price on the day the order processes**, not locked at signup. Two lifts for USA Clean: a "ships-together" discount tier maps beautifully to a fleet buyer ordering pads + brushes + squeegees for one building, and the price-at-processing-time model is the honest billing semantics to adopt.
### Zoro Order Subscription — the B2B-gating + bounded-run precedents
Zoro's auto-replenishment is **gated to Business Account customers**, with a coarser cadence set (weekly / bi-weekly / monthly) and — distinctively — customer-set **start and end dates** (bounded runs, not open-ended). It's framed around avoiding production downtime, not savings. Two B2B design cues: gating subscribe behind an authenticated Pro/Net-30 account is a legitimate choice, and start/end bounding suits project- or season-bound facility contracts.
### Grainger KeepStock — the contrast case (what we are NOT building yet)
KeepStock is **not** a PDP subscribe toggle — it's a service-tiered inventory program (Onsite / Managed / VMI / vending / bin-label) where reorder is triggered by min/max thresholds and consumption scanning, not a customer-set calendar. The mental model is *replenishment-to-threshold*, not *deliver-every-N-days*. Worth citing precisely to keep the two distinct: a calendar-cadence Subscribe & Save is the light-touch self-serve entry point; a true consumption/VMI program is a separate, heavier Phase 3 offering. Don't conflate them on the PDP.
### Chewy Autoship — the consumer UX gold standard
Cited purely for the cadence/skip/manage UX and one strategic split: a large first-order hook (~35% off, capped) then a modest ongoing discount (~5%). Management is a "Manage Autoship" surface with per-section Change links, a Skip Shipment button, an Order-Now (ship early) button, and Cancel at the bottom. The friction pattern to *avoid*: each subscription managed and cancelled individually. For B2B, predictable ongoing pricing beats a one-time teaser — so we take Chewy's management UX, not its onboarding-discount strategy.
> **The three-way affordance distinction to hold onto.** Shopping lists (saved templates, no automation), one-click reorder / Buy Again (manual repeat of a past order), and subscriptions / standing orders (automated recurring) are routinely confused. Zoro, Staples, and Amazon all keep "reorder from history" separate from "subscribe." On USA Clean's PDP the toggle must read as *automation* ("we ship every N days"), clearly differentiated from the Buy Again / order-history module (see [recently-purchased-concepts.md](recently-purchased-concepts.md)) and from saved carts ([saved-cart-concepts.md](saved-cart-concepts.md)).
### Cadence differs sharply by part class
Wear rates make per-category default frequencies smarter than one global default:
| Part class | Typical replacement interval | Subscribe fit |
|---|---|---|
| Floor pads | ~50–100 hrs (disc pads far shorter — weekly-to-monthly in heavy use) | Strong · 30–60 days |
| Scrub brushes | 30–75 hrs / 6–12 mo / at 25–50% bristle loss | Strong · 30–60 days (the demo SKU is a nylon disc brush) |
| Squeegee blades | flipped weekly, replaced every 3–6 mo (~300–600 hrs) | Good · ~90 days |
| Detergents | tracks usage volume | Good · usage-driven |
| Batteries | every 2–4 years | **Exclude** — not a subscribe candidate |
The prototype's 60-day default is a sensible middle for the brush/pad demo SKU, but the brief recommends **per-category default cadences** and, as a differentiator vs. generic retail subscribe, a possible **machine-runtime-hours** framing later.
### The reassurance triad
Across Amazon, Chewy, and Staples the "terms" burden is light and trust-oriented. The universal inline reassurance is **free/included shipping · skip-or-cancel-anytime, no penalty · price charged at each shipment**. Deeper mechanics sit one layer down in an expander. USA Clean's expandable panel is the right structure, but the top-line reassurance should be *visible inline under the toggle*, not hidden behind the expander — and for Net-30 accounts, add a line on how recurring shipments invoice (per-shipment vs. consolidated).
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## What BC Stencil gives us
BigCommerce gives us every UI hook the affordance needs — and none of the billing/scheduling engine behind it.
- **Product Options / Modifier Options.** Products support checkbox / multiple-choice / drop-down modifiers, queryable and settable via the Catalog APIs and GraphQL. A "delivery frequency" selector can be modeled as a **product modifier** so the buyer's cadence is captured on the line item and flows into the order — the same native mechanism apps like Rebillia hook into ("built into the native variants and modifiers system"). This lets the prototype's frequency `