Storefix Desk
Marketplace sync check · Shopify + Amazon, eBay or Etsy

Find the listings that are out of sync before they oversell.

Send us two exports: your Shopify products and your marketplace listings. You get a report of the SKUs with stock or price mismatches, listings missing on one side, and the ones at risk of overselling. SKU by SKU.

Check my sync — $79Not ready? Get a free mismatch count →

One-time · report in 3 business days · nothing to pay if it isn't useful · CSV or TSV exports from Shopify, Amazon, eBay or Etsy

Pilot service: tested on sample files in each platform's documented export format, not yet on many real stores.

Illustration: a store and a marketplace showing different stock numbers
Sync reportsample layout · illustrative data
SKUShopifyAmazonIssue
MUG-RED59Oversell
MUG-BLU$12.00$13.50Price
LAMP-120—Missing
Sample layout with illustrative data. Same report structure for Amazon, eBay or Etsy.
AccessNo app, no API keys, no passwords. Two export files.
DeliveryReport by email within 3 business days.
ProofEvery mismatch shown with both values, SKU by SKU.
GuaranteeNot useful? Nothing to pay.
Not sure yet? Start free

Send your two exports. We'll count the mismatches, free.

Within 1 business day you get the number of SKUs out of sync (stock, price, missing on one side) and the first one with both values. If we find no mismatches among the SKUs we can match, we tell you that too.

Want the full SKU-by-SKU report and fix plan now? Order for $79 →

Opens your email app; attach your two exports there. No account, no card.

Why listings drift

Sync apps fail quietly.

You find out from a cancelled order or a marketplace warning, and checking hundreds of SKUs by hand isn't realistic. These are the three causes we check for.

SKU

Broken mappings.

A variant loses its SKU or gets a duplicate, and the sync app silently skips it from then on.

−1

Uncounted locations.

One warehouse isn't included, so the marketplace shows more or less stock than you really have.

$

Stale prices.

A price changed on one side months ago and never made it to the other.

What you're buying

One report. Every SKU we can match from both exports.

We match your Shopify export with your marketplace export by SKU and list everything that differs. Rows without a SKU, duplicate SKUs and unreadable values are listed separately, not silently skipped. Then we tell you what to fix first.

What's out of sync

  • 01SKUs where the marketplace shows more stock than Shopify has (oversell risk)
  • 02Stock and price differences, SKU by SKU, with both values
  • 03Listings that exist on only one side

Why, and what to do

  • 04Duplicate or missing SKUs that break syncing
  • 05SKUs missing from your inventory export, rows without a SKU, unreadable prices or quantities
  • 06A short fix plan, most urgent first
How the report readsillustrative data
Oversell riskMUG-RED: marketplace shows 9, Shopify has 5
Shopify5 available across 2 locations (2 + 3)
Amazon9 available
FixSet the marketplace quantity to 5 now; check why the second location isn't counted by your sync app.
PriceMUG-BLU: $12.00 on Shopify, $13.50 on Amazon
FixDecide which price is right; the report flags matched SKUs where prices differ by more than 1 cent.
MissingLAMP-1: on Shopify only
NoteNot listed on the marketplace. Intentional or a broken mapping: you decide, we list them all.
Layout and data are illustrative. The matching logic is tested on sample exports in each platform's documented format.
How it works

From two files to a fix plan in four steps.

1

Order

Order for $79 and tell us which marketplace.

2 minutes
2

Send two files

Your Shopify products export (plus the inventory export if you use several locations) and your marketplace listings report. We email the export steps.

10 minutes
3

We compare

Every SKU we can match on both sides: stock, price, presence. Rows without a SKU are matched by hand where possible and listed where not.

Up to 3 business days
4

You get the report

By email, with the fix plan. One round of follow-up questions is included.

Then your files are deleted within 30 days
Before you order

This is a pilot. Here's what that means.

Included

  • Shopify compared with one marketplace
  • Oversell risks, stock and price mismatches
  • Missing and orphan listings
  • SKU problems that break syncing
  • Fix plan, most urgent first
  • One round of follow-up questions

Honest limits

  • New service. Our matching tool has been tested on sample files in each platform's documented export format, not yet on many real stores. That's why it's a pilot, and why you pay nothing if the report isn't useful.
  • Files we read: CSV or tab-separated, as exported by Shopify, Amazon (All Listings Report), eBay (active listings download) or Etsy (listings CSV). Anything else: email us first.
  • Matching is by SKU. Items without a SKU on one side are matched by hand where possible and flagged where not.
  • A snapshot. The report reflects your exports at the moment you took them. We don't change your listings or your sync app.
S

Storefix Desk is an independent one-person service. An independent service doing a few fixed-price jobs for Shopify merchants. Email hello@storefixdesk.com before or after you order. We reply within 1 business day.

Questions

Asked before ordering.

Is my data safe?

We only need exports with SKUs, prices and quantities. Files are used for your report and deleted within 30 days.

Two marketplaces?

Order twice, or email us and we'll set up one order for both.

Will you fix the sync for me?

The check tells you what's broken and in what order to fix it. Hands-on fixing can be quoted separately.

What does the free mismatch count include?

The number of matched SKUs out of sync between your two files and the first mismatch with both values. The paid report lists all of them, plus unmatched rows, with the fix plan.

How do payment and the refund work?

You place the order, we confirm by email, and payment is settled after delivery. Tell us within 7 days of delivery that the report wasn't useful and there is nothing to pay. Full terms on the terms page.

Are you affiliated with Shopify, Amazon, eBay or Etsy?

No. We're an independent service.

Illustration: two export files merged into one report

Two files in. The mismatches out.

Stock, price and missing listings for every SKU we can match, with a fix plan, within 3 business days.

$79
One marketplace · SKU-by-SKU report and fix plan · 3 business days
Check my sync

Not useful = nothing to pay · or start free