Delta is Zoom Books' real-time buying engine. Scan any barcode and know in under a second whether we want the book and exactly what we'll pay — then ship it to us on a schedule that suits you and get paid by order, not by promise.
Point your scanner at any ISBN. Our engine prices it against live market data and our in-demand lists in real time.
You see the exact offer before you commit. Accepted books go onto your open order automatically.
Close out your order when you're ready — or let our weekly close-out do it — and schedule a pickup from the portal.
We receive, reconcile, and pay by order. Every book is accounted for on your statement, downloadable any time.
The price you see at scan time is the price on your order. No repricing surprises after your books arrive.
Millions of titles carry a guaranteed flat offer because our buyers want them right now — common books other vendors reject.
Batch scanning, order-level manifests, CSV statements, and a portal that stays fast whether you send 50 books or 50,000.
Delta is API-first: decisions, reservations, orders and settlement over simple JSON endpoints.
Explore the API docs