Case Study · Inbound discovery request

Case Study: Why a U.S. B2B Brand Asked Us to Replace Their Custom Shopify Discount System

A U.S.-based B2B manufacturer reached out to us asking for a Shopify-native replacement for their custom-coded case and wholesale discount system. The brief is anonymised, but the requirements are exactly what we see across mid-market Shopify Plus B2B brands.

The inbound request

Among the B2B businesses that contacted us for a demo, one stood out: a U.S. wholesale brand running a high-volume Shopify storefront with deeply customised pricing rules. Their customer service lead reached out with a clear, prioritised brief - they wanted to move off a fragile, custom-coded case discount system and adopt a configurable, third-party Shopify app that their support team could own day-to-day.

We are keeping the brand and team names confidential, but the operational pattern is one that almost every growing B2B merchant on Shopify will recognise.

The trigger

“We have a new priority task to transition our B2B discount system away from custom code. Our current custom-coded case discount solution on Shopify is difficult to maintain and integrate. The goal is to find an application that can handle complex scenarios and is simple enough for the support team to manage.”

Paraphrased from the inbound request. Identifying details removed.

What the team actually needs

The brief reads like a quote-to-cash requirements doc disguised as a discount problem. The replacement platform has to cover both the existing functionality and a long list of future wholesale scenarios - all configurable to the SKU level.

Case & prepack pricing

Automatic case-of-N pricing treated as a clean quantity break, with no manual SKU duplication.

Volume-based spend tiers

Apply percentage discounts (e.g. 10% off) once a buyer crosses a total spend threshold across the catalog.

SKU-level liquidation bundles

Incentivise slow-moving SKUs (small / 3X sizes) when bundled with full size runs - e.g. buy 3 M/L/XL, add the small at a fixed $10.

Bundle + cart discounts

Compose bundle pricing with cart-level discounts without conflicting stacks or silent overrides.

Bulk discount codes

Generate large batches of unique discount codes for distributor, sales-rep and campaign workflows.

SKU-level rule configuration

Rules must be configurable down to the individual SKU, not just collection or vendor.

On top of the discount engine itself, they also asked for a cart-stage call-to-action countdown - the familiar “add 5 more to unlock 10% off” pattern that turns a static discount into an active conversion lever for B2B buyers building large orders.

Why this is a quote-to-checkout problem, not just a discount problem

Custom-coded discount logic usually starts small - one rule, one developer, one weekend. Two years later it has accumulated case pricing, prepack rules, bundle exceptions, customer-specific overrides, and ad-hoc fixes that only one engineer fully understands. Every Shopify checkout update or theme upgrade becomes a regression risk, and the support team has to escalate every edge case back to engineering.

The fix is not “a bigger custom build.” It is moving the rules into a configurable layer where operations and customer service can manage them safely, with audit trails, previews and conflict detection - the same shape we are building for RFQ, approvals and locked B2B checkout inside TradeQuote AI.

Why Shopify is the right platform for SMB, mid-market and enterprise B2B

This request also reinforced why we chose to build TradeQuote AI on Shopify in the first place. For a small or medium business launching a B2B channel, Shopify shortens the path from idea to first paying customer by months. For a mid-market brand, it removes the need to operate two separate platforms for B2B and DTC. For enterprises, it provides a hosted, compliant commerce backbone that the team can extend with Shopify Functions, checkout UI extensions and apps instead of bespoke code.

Hosted, PCI-grade checkout that scales

Shopify operates the checkout, fraud, tax and payments stack - SMBs avoid building it, enterprises offload risk and compliance.

Native B2B primitives on Shopify Plus

Company accounts, customer-specific catalogs, price lists, payment terms, and draft orders are first-class - not bolt-ons.

One stack for B2B and DTC

Wholesale and retail can run on the same products, inventory and Shopify Functions logic, instead of two disconnected platforms.

Mature app + Functions ecosystem

Shopify Functions, checkout extensibility and the App Store let teams replace custom code with configurable apps the support team can own.

Proven at enterprise scale

Brands like Mattel, Heinz, Glossier, Allbirds, Gymshark, Steve Madden, Kraft Heinz and many global manufacturers run on Shopify Plus.

Lower total cost of ownership

Replacing custom code with configurable apps lowers engineering load and shortens the time between a buyer request and a shipped order.

Enterprise brands already running on Shopify

Shopify is no longer just a starter platform. Global brands run their direct and B2B channels on Shopify Plus, including:

Brand list compiled from publicly available Shopify Plus case studies. Trademarks belong to their respective owners.

How we are responding to this kind of request

Conversations like this one are exactly why TradeQuote AI exists. We are using inbound discovery requests like this to validate the workflow layer Shopify Plus B2B brands actually need - structured RFQs, multi-tier approvals, contract and discount rule enforcement, and a locked quote-to-checkout flow that keeps Shopify as the system of record.

Our shared engineering team also ships Discount Prime for Shopify wholesale pricing, a Shopify-native pricing app already running tiered wholesale pricing, bulk catalog repricing and conflict-safe B2B + DTC campaigns in production. That is the same foundation we are extending into the quote, approval and checkout layer for B2B teams that have outgrown custom code.

Talk to the team behind this case study

Bring us the discount and quote scenarios your custom code can no longer carry

If your Shopify store is stuck on a fragile case, prepack or volume-discount script, share the requirements doc with us. We will walk you through how the same shared engineering team behind Discount Prime and TradeQuote AI would model your tiers, bundle rules and quote-to-checkout flow on Shopify, and where a configurable app replaces custom code safely.

  • Bring your current discount logic and edge cases
  • We map them to Shopify-native, support-owned rules
  • No code review, no sales pitch - a working session
  • Findings are yours to keep, even if we never work together

Do your approved B2B quotes still become manual Shopify orders?

We are interviewing Shopify Plus merchants and agencies to understand where RFQs, approvals, contract rules, and checkout handoff break down.

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