Appstle

Appstle collapses subscriptions, memberships, loyalty, bundles, and local fulfillment into one Shopify app suite, so an agency can sell a bundled retention retainer instead of stitching together five vendor integrations. With plans from $0 to $100/mo per client plus $0.05 per extra order, the resale spread is wide enough to price a $399/mo loyalty setup and still clear margin. The catch is platform lock: Shopify and Shopify Plus only, so the leverage compounds only for agencies whose book is already Shopify-heavy.

Appstle prices by monthly order volume, not by client count: Free covers up to 250 orders, Starter at $10 covers 500, Business at $30 covers 2,000, and higher tiers run to $100/mo, with $0.05 per extra order beyond the cap. That structure turns order volume into the agency's margin variable. An agency charging a flat $399/mo loyalty retainer keeps roughly $369 of it while a boutique stays under 500 orders on the $10 Starter plan, but the same retainer thins once a client crosses 2,000 orders and the Business plan applies. The ladder discipline: before signing any Appstle retainer, pull the client's trailing three-month order counts, assign the plan tier that covers the peak month, and write the tier into the contract so plan upgrades are a pass-through cost rather than an agency write-off. Recheck volume quarterly, since holiday peaks can push a client up two tiers in one month.

Recurring Revenue Custody treats the billing layer as an asset agencies either hold or rent. When an agency controls the subscription record (plan changes, dunning logic, tax handling, renewal dates), it sits inside the client's cash cycle and renewal conversations become operational check-ins rather than annual pitches. When a third party holds that record, the agency is a line item the client can audit against a vendor invoice. The framework asks one question per engagement: who owns the subscription object? A Merchant-of-Record arrangement such as Paddle absorbs global tax across 300+ markets, which removes compliance work but also removes the agency from the transaction relationship. Hosting shops running WHMCS keep provisioning and invoicing in one console, so every support ticket is also a billing touchpoint. The custody decision should be made at contract signature, because migrating a live subscriber base mid-retainer costs more than the original build.

Billing Portability Premium is the practice of pricing how cheaply a client could leave your recurring revenue stack, not how cheaply you can run it. Every billing decision carries an exit cost: subscriber records, dunning history, tax filings, and grandfathered plan logic that a migration must rebuild. Agencies that install high-portability stacks (exportable subscriber data, gateway-agnostic tokens, clean invoice archives) can hand a client their billing engine intact, which makes the agency the trusted custodian rather than the toll booth. The premium shows up at renewal: clients renew the operator who can prove the exit is survivable. A Merchant-of-Record layer such as Paddle absorbs tax liability across 300+ markets, but it also concentrates records the client cannot easily carry elsewhere, so the agency should document what leaves with the client. WordPress membership builds on MemberPress or MemberMouse sit at the opposite end, where subscriber tables and content gates travel with the site.

Adopt Appstle when a Shopify client needs two or more retention modules and clears 500 monthly orders, and price the engagement as a retainer that absorbs the $10 to $100/mo app cost plus $0.05 per extra order.

Model the exit before signing: confirm in writing that subscriber records, invoice history, and payment tokens can be exported or migrated, and price the migration effort into the engagement.

IF your agency manages 10 or more Shopify or Shopify Plus stores and wants to sell retention as a retainer, THEN Appstle's suite (subscriptions, memberships, loyalty, bundles, pickup/delivery) replaces five separate vendor integrations, and the Free plan covers stores under 250 monthly orders while Business at $30/mo covers up to 2000 monthly orders with 0% transaction fee. IF your client roster runs on WooCommerce, BigCommerce, or custom platforms, THEN skip Appstle entirely because it is Shopify-only and cannot be resold elsewhere.

A productized deployment that turns one Shopify client into a bundled retention account using Appstle's subscription, membership, loyalty, bundle, and pickup/delivery modules, priced as a monthly retainer against a per-store app cost of $0 to $100/mo plus $0.05 per extra order.