Until now, a batch could go to eBay or ManaPool. Pick one, and the other marketplace never saw those cards. Listing the same copies in both places meant risking a double sale, so Quick Ship refused to let you.
That refusal is gone. Cross-listing lets one physical copy sit on eBay and ManaPool at the same time, and live order sync is what makes it safe.
Live Order Sync
Turn it on for eBay and ManaPool under Connections, and your orders import themselves the moment a buyer checks out. Within seconds the order is matched to your inventory and reserved, and a badge on the marketplace card shows how many are waiting. Press Sync as usual to load them into your batch, and the matching is already done.
One Sale, Both Sides
The moment a card sells on one marketplace, Quick Ship lowers the listing on the other. Sell your last copy on ManaPool and the eBay listing ends. Sell one of three on eBay and the ManaPool quantity drops to two. You never touch it.
If two buyers ever beat the clock and grab the same copy within the same few seconds, you get an alert on the Process page and an email naming the order, instead of finding out from a buyer.
Listing Both at Once
On the commit step, marketplaces are now grouped by whether they can share copies. With live order sync on for both, pick eBay and ManaPool together and the batch goes to both. Your existing pricing rules apply per marketplace.
ManaPool is still Magic-only, so cross-listing applies to all-Magic batches.
What Happened Today
Process → Activity shows every order that came in through live order sync, what it matched, and anything that needs your attention.
Cross-listing and live order sync are available on the Pro plan and above. If you connected eBay a while ago, you may need to disconnect and reconnect it once before the switch turns on.