Syncstocky for eBayLive todayStop eBay defects from out-of-stock cancellations
Cancelling an eBay order because the item sold elsewhere is a seller-fault defect that drags down your rating. Syncstocky keeps eBay quantities aligned with Shopify and Amazon — in seconds, not polling cycles.
No spam — one email at launch · First 50 accounts get 20% off
The problem
Dual-listing on eBay without sync is a gamble
Seller-fault defects stack up fast
Every out-of-stock cancellation counts against your seller standard. Fall below standard and you lose visibility, fee discounts, and buyer trust — over inventory mistakes, not product quality.
eBay moves fast when you least expect it
A listing can sit quiet for weeks, then a price watcher or promotion clears your stock in an hour. If your other channels don't hear about it immediately, they keep selling ghosts.
Revising quantities by hand doesn't scale
Bulk-editing listing quantities every morning is a part-time job — and it's always one day behind reality.
The solution
How Syncstocky keeps eBay in sync
The same real-time engine across every channel — eBay included.
Real-time both ways
eBay sales update your other channels in seconds; sales anywhere else revise your eBay listing quantities just as fast.
Listing-level SKU mapping
Map eBay listings (including variations) to your master SKUs — even when your eBay custom labels don't match anything else.
Full sync history
Every quantity revision is logged with source and destination, so disputes and surprises can be traced in seconds.
Forecasting included on Pro
Claude AI forecasting reads demand across all your channels together — so reorder decisions reflect your real velocity, not one channel's slice.
How it works
Three steps to synced stock
Connect eBay
Connect your eBay seller account with eBay's official OAuth flow — no API keys to copy around. We import your active listings and register real-time sync automatically.
Map your SKUs
Auto-match identical SKUs across channels and link the rest by hand — every product ends up with one master SKU.
Sell with confidence
Every order, restock, or adjustment on any channel updates all the others within seconds — automatically.
Popular pairings
Sync eBay with everything else
One inventory pool, however many places you sell.
FAQ
eBay sync, answered
Yes. eBay OAuth connect, listing import, and real-time inventory sync are live today — alongside Shopify and Amazon.
Yes — variation-level mapping is supported, so each size or colour maps to its own master SKU and syncs independently.
No. Like every Syncstocky channel, we only revise inventory quantities on your existing listings. Titles, prices, photos, and descriptions are never touched.
We receive the eBay order notification and push the new quantity to Shopify, Amazon, and every other connected channel within seconds — typically around three.
Plans start at $29/month for up to 2,000 orders per year across all channels, with a 14-day free trial at launch.
Ready to stop overselling on eBay?
Join the waitlist and we'll send you a single email the day Syncstocky opens. The first 50 accounts get 20% off their first purchase.
No spam. Unsubscribe with one click.