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Your marketplace and your store, finally in sync

Two-way sync between eBay and your own Shopify or BigCommerce store — catalog, price, quantity and orders — proven on a 70,000-listing catalog.

What you get

eBay, Shopify & BigCommerce sync, done properly

  • eBay Trading & REST APIs
  • Shopify Admin GraphQL
  • BigCommerce API
  • Signed webhooks
  • Queues & workers
  1. 01

    Listings in, products out

    We import your eBay listings with item specifics, variations and images, and publish them as clean products with collections and tags.

  2. 02

    One stock count

    A sale on either channel updates the other. Hourly change checks and a six-hour safety sweep catch anything a webhook missed.

  3. 03

    Orders in one place

    eBay and storefront orders land in one record, ready for labels and fulfilment.

  4. 04

    Built for big catalogs

    Rate-limit budgeting, parallel requests and resumable jobs mean tens of thousands of listings sync without tripping API limits.

Proven in production

How we built it for a real client

Marketplace → storefront

70,000+ eBay listings, synced into Shopify

An aftermarket vehicle-parts seller

Every listing enriched with item specifics and vehicle fitment, rewritten for SEO and published through the Shopify GraphQL API — plus a year/make/model part finder on the storefront. Webhook queues, order polling and layered stock reconciliation keep both channels accurate.

listings synced
70k+
scheduled jobs
14
channels, one stock count
2

Client names are kept private. Ask us for a walkthrough on a call.

Our own software

SalesChannelHub. Sell everywhere, manage once.

The multichannel inventory and order platform we built for sellers like you: one honest stock count and one order queue across eight channels — with purchasing, warehouse and returns tools underneath.

Explore SalesChannelHub From $79/month · 14-day trial, no card

Start a project

Let’s make yours the store buyers remember.

  • Fixed quote before any work starts
  • In-house team in New Jersey — no outsourcing
  • Support long after launch

Prefer to talk? (609) 675-0912 · frannie@ocdesignsonline.com

Fixed quote before any work starts. We reply within one business day.