Common questions, answered

Can I upload my inventory from a CSV or spreadsheet?

Yes. Open Products, click the actions menu, and choose Import from Excel/CSV. The importer accepts .csv, .xls, and .xlsx files and walks you through three quick steps:

• Map your columns — match each column in your file (SKU, title, price, condition, consignor account, location, …) to the ResaleOS field it belongs to. Not sure about the format? There's a Download example CSV button right in the modal.
• Map your values — if your file uses its own labels (say, a status column with “ACTIVE” or a condition column with “EUC”), you match each value to its ResaleOS equivalent once and the importer applies it to every row.
• Import — products are bulk-created (or updated), and any image URLs in the file are downloaded and saved to your account automatically.

The same importer lives on the Sales and Accounts pages, so you can bring in past sales and consignor lists from spreadsheets too. And if you're moving from another consignment platform entirely, skip the spreadsheets — our free done-for-you migrations move everything for you.

Why do my Mercari listings always offer free shipping?

This one isn't a ResaleOS setting — it's a limitation of Mercari's public API. The only shipping method the API currently supports is seller-paid “ship on your own”, which buyers see as free shipping. Buyer-paid shipping and Mercari prepaid labels can't be set through the API at all, by any tool.

Until that changes, the practical fix is to bake your expected shipping cost into the item price for anything you cross-list to Mercari. We've asked Mercari to add the other shipping options to their API, and we'll support them the moment they exist.

Can US sellers connect Vinted?

Yes. Vinted connects the same way Poshmark and Depop do — pick I sell on Vinted as an individual under Settings → Sales channels and sign in through the secure browser window. There's no region restriction and no API key to apply for, and all seven operations work: publish, update, delist, import, listing sync, sales sync and reconcile.

Vinted Pro business sellers can connect the other way instead, with the access key and signing key from the Vinted Pro Integrations Portal. That programme is still European-business-only, which is why it's the alternative rather than the default. Either route lands in the same place. Questions? Reach us on What's new or at info@resaleos.co.

Shopify says ResaleOS is missing permissions — how do I fix it?

If a pop-up in ResaleOS tells you your Shopify connection is missing permissions (for example to read products or orders), the fix is to re-install the app on your Shopify store so the new permissions actually take effect:

1. Follow the steps in the pop-up to add the missing scopes to your Shopify app in the Shopify dev dashboard (create a new version with the scopes, then click Release).
2. On the app's Overview page, open the install link and click through the approval screen on your store.

Can you backfill my past sales from a connected channel?

Yes — and you don't have to do anything technical. When you connect a sales channel, ResaleOS starts tracking sales from that point forward. If you'd like your earlier sales history in ResaleOS too — so reports, analytics, and consignor balances reflect the full picture — just email info@resaleos.co (or reach out from Dashboard → Help) and tell us which channel and how far back you'd like to go. We'll run the historical import for you.

Does ResaleOS import my eBay fees?

Yes. When eBay reports the fee on an order, we import it and attach it to the sale automatically as an "Ebay fee" surcharge deducted from the store, so your margins reflect what you actually netted without any hand-entry.

Two things to know. The fee lands on store-owned items only — consignment lines are left alone, because what a consignor is owed is set by your split, not by eBay's fee. And eBay sometimes finalizes a fee after checkout; if a sale imported before the fee posted, it won't appear retroactively, so add that one manually as a surcharge.

New to surcharges? Here's how to add a surcharge — including how to set up a percentage-based one you can reuse on every eBay sale.

Is there an affiliate program? Can I share ResaleOS with a link?

Yes — every account comes with a built-in referral program. Open Refer & earn at the bottom of your dashboard sidebar (right above your account avatar) and hit Copy referral link. Share that link anywhere — a DM, social post, or email — and:

• They get 30% off their first year on any paid plan, stackable with other coupons.
• You earn a recurring monthly reward for as long as they stay subscribed — the amount varies by their plan, and it's paid out automatically once the ~30-day hold window passes. No clawbacks on rewards you've already earned.

The full details — hold windows, payout mechanics, what happens if a referral cancels — are in how the referral program works.