Shopify Plus for custom, B2B & global commerce

We design, build and migrate Shopify Plus stores — and we build the apps other merchants install. When you need custom checkout logic, advanced B2B, multiple stores or serious scale, that's where Plus earns its price, and where we do our best work.

What Shopify Plus actually unlocks in 2026

The capabilities that are genuinely Plus-only — and exactly where our app engineering matters.

Custom Shopify Functions

Build your own discount, shipping, payment and cart logic — not just install app-store ones.

Pre-purchase checkout customization

Checkout UI extensions on the information, shipping and payment steps, plus full checkout branding.

Advanced B2B

Unlimited catalogs, per-company pricing and catalog assignment, deposits and partial payments.

Multi-store & expansion

A main store plus up to 9 expansion stores, managed centrally with Organization admin.

Scale & throughput

Roughly 10× higher API rate limits, higher checkout capacity for peak events, and unlimited staff accounts.

Economics & support

Lowest payment rates with 0% third-party transaction fees, POS Pro included, Launchpad, and dedicated launch + 24/7 support.

Why Appfleece for Shopify Plus

We work with Shopify Plus merchants every single day — through the apps we publish and as a long-term partner running the entire development side of their business.

  • Plus merchants, every day. We build the apps other merchants install — Globe, Payflow, Charm, Heureka and Address IQ run on hundreds of Plus and high-volume stores — so checkout, Functions and APIs are second nature to us.
  • Your long-term dev team. Beyond one-off projects, we manage the whole development side for growing brands as an ongoing partner — custom features, integrations and day-to-day engineering.
  • Migrations & rescues, proven. We've delivered complete Plus migrations and taken over stalled builds from other agencies to finish them right — for brands like Posedla, Life is Porno, Verra and Facederma, among many more.
Posedla cycling saddle e-commerce case study - Shopify Plus migration with custom checkout interface and B2B platform integration
Sports & outdoors

Posedla

Complete Shopify Plus migration with custom checkout, B2B platform and ERP integration. Comprehensive e-commerce solution for global cycling saddle brand.

Shopify PlusCheckout customizationGlobe shippingFull theme developmentB2B platform
Verra vitamins and supplements e-commerce case study - Shopify Plus upgrade with custom warehouse management app and international expansion
Vitamins & Supplements

Verra

Long-term collaboration including complete Figma redesign, Shopify Plus upgrade, market expansion, international growth, and a custom warehouse management app, streamlining operations.

Shopify PlusCheckout customizationGlobe shippingMarket expansionSubscriptions
Life is Porno fashion e-commerce case study - workflow optimization with Mailship integration and bundle products
Fashion & Apparel

Life is Porno

Long-term partnership focused on workflow optimization, automations, Mailship fulfillment integration, bundle products, and custom theme development with password-protected features.

Shopify PlusCheckout customizationGlobe shippingAdvanced workflowsCheckout optimization
EcoHaus home and garden e-commerce case study - Shopify Plus upgrade with B2B platform and marketplace XML feeds
Home & Garden

EcoHaus

From a school project to a international brand through Shopify Plus upgrade, B2B platform, robust XML feeds to marketplaces and detailed marketing analytics implementation.

Shopify PlusCheckout customizationGlobe shippingB2B platformXML feeds

Proof on Plus

We help brands grow on solid foundations, with a clear vision and long-term direction. We're not just service providers — we're partners you can rely on long after launch. We're here when it's time to grow, shift or spark something new.

Shopify Plus, answered honestly

Plus starts around $2,300–2,500/month (1–3 year terms), with a variable platform fee for very large merchants. We help you weigh that cost against what it actually unlocks for your business.

Mainly: custom Shopify Functions, pre-purchase checkout customization, advanced B2B, multiple stores, ~10× API limits, unlimited staff, and dedicated support. Markets, basic B2B and Flow are on lower plans now, so they're not reasons to upgrade.

No. Shopify Markets and basic B2B are available on standard plans in 2026. Plus pays off for advanced B2B (unlimited catalogs, per-company pricing) and deeper customization — and for its lower transaction fees, which for high-volume merchants often cover the cost of Plus itself above a certain revenue level.

Not when it's done right. We run a phased migration with a full 301 redirect map, SEO preservation and data-integrity checks so your store stays online and your rankings hold.

It depends on scope, but a typical Plus migration runs ~8–16 weeks and a focused custom build can be quicker. After a short discovery we give you a concrete timeline, not a vague range.

Yes — we regularly inherit and finish stalled or half-built Plus projects: we audit what exists, stabilise it, and pick up from there. That said, we always prefer to work with merchants from the very beginning of the build.

Most of our Plus clients stay on as a long-term partnership — we run the ongoing development side (features, integrations, optimisation) rather than disappearing at go-live.

We support merchants with our own Shopify apps at discounted partner pricing, and build custom apps and integrations to meet any merchant's needs — from ERP, PIM and WMS systems to Klaviyo, Recharge and Gorgias, plus custom Shopify Functions when off-the-shelf won't do.

Interested in collaborating on a project?