We will not invent a price range here, because the honest answer is that Shopify B2B projects vary more than almost any other kind of ecommerce work. What we can do is explain what actually drives the number, so you can judge a quote — ours or anyone else's.

The platform cost sits underneath everything

Native Shopify B2B requires Shopify Plus. That is a subscription cost independent of development, and for lower-volume wholesale operations it is often the deciding factor. Work out whether Plus is justified by your order volume before you scope a build; if it is not, a simpler approach on a standard plan may be the right answer.

What makes a build cheap

  • You are already on Shopify Plus with a working retail store
  • Your wholesale customers are structurally simple — one location, one or two buyers
  • Pricing is a straightforward percentage off retail rather than per-product contract rates
  • You have few existing wholesale customers to migrate
  • Standard onboarding is acceptable, so an app can cover the application and approval flow
  • No ERP integration, or an ERP with a well-documented API

What makes a build expensive

  • Complex pricing. Per-customer contract rates across a large catalog, tiered volume breaks, or rules that vary by location.
  • Data migration at scale. Hundreds or thousands of wholesale accounts with inconsistent historical data.
  • ERP integration. Especially older systems with no modern API, where the connector is a project in itself.
  • Custom onboarding. Approval processes with multiple stages, external verification, or industry-specific compliance.
  • Custom buying experiences. Configurators, quoting, contract renewals, or anything beyond catalog ordering.
  • Migrating from a legacy B2B platform with features Shopify does not natively match.

The cost that is invisible in the quote

Data cleanup. Almost every wholesale migration uncovers pricing inconsistencies, duplicate accounts, and agreements nobody can find documentation for. Resolving those is commercial work your team has to do, and it is frequently the longest pole in the project. A quote that does not mention it has not thought about it.

Questions to ask any quote

  1. What happens if our customer data turns out to be messier than expected?
  2. Is the application and approval flow custom, or an app? What does that app cost annually?
  3. What is included in the integration, and what is assumed about our ERP?
  4. How many wholesale accounts does the migration price assume?
  5. What does support look like after launch, and what does it cost?
  6. What is explicitly out of scope?

How we approach it

We scope before quoting. That means understanding your customer structure, your pricing rules, your existing systems and your data quality first, then quoting a fixed number for a defined scope. It is slower to get to a price and considerably more accurate.

More: Shopify B2B development services, the Shopify B2B development guide.