Summary

Wood Publishing launched with 10,000 books selling through both Amazon FBM and their own direct channels. Running both from one inventory pool, with barcode scanning at intake, pick, pack and ship, is what kept the channels synchronized and the Amazon metrics clean.

The situation

A book launch is a demand spike with a known date and an unknown size. Wood Publishing had 10,000 units arriving and two channels to serve at once.

Amazon FBM is the harder half. Unlike FBA, where Amazon handles fulfillment once inventory is in their building, merchant-fulfilled means the seller owns everything: storage, picking, packing, label compliance, shipping deadlines, tracking uploads and accuracy. Amazon measures all of it.

That's the part sellers underestimate. FBM gives you control over inventory and margin, and hands you the performance risk in exchange. Miss shipping deadlines or fail to upload tracking and your late shipment rate and order defect rate move, which affects account standing rather than just a review score.

Running FBM alongside direct sales adds the second problem: two channels drawing from one physical stock. Without synchronized inventory, you oversell on one side and sit on stock you thought was committed on the other.

The questions before launch were concrete. Could one provider run both channels? How does inventory stay synchronized? What prevents overselling? And what keeps Amazon's metrics from slipping during the busiest weeks?

What we did

Received and mapped the full 10,000-unit inventory. Pallet staging, barcode-based intake, SKU-level mapping and rack storage, all logged in the WMS as it arrived. One source of truth before the first order.

Scanned at every checkpoint. Intake, picking, packing and outbound shipping. For FBM that isn't process for its own sake: scanning is what produces accurate tracking confirmation, which is one of the metrics Amazon watches.

Built a dedicated Amazon workflow. Automated order intake, priority pick sequencing, label compliance, same-day cutoff procedures, tracking upload verification and shipment confirmation. Amazon orders don't queue behind direct orders, because Amazon's clock is stricter.

Ran direct-to-consumer from the same inventory. Ecommerce order integration, pick and pack, and shipping confirmation drawing on the same stock with synchronized counts.

Set it up to absorb the next release. Repeatable receiving and outbound workflows, so a second title or a demand spike from a media appearance doesn't require rebuilding the operation.

Results

Both channels served from one inventory pool, with counts synchronized so neither oversells the other.

Amazon seller metrics protected through same-day cutoff adherence and verified tracking uploads.

Full inventory visibility from intake through outbound, with scan verification at four checkpoints.

A launch that ran on process rather than improvisation, which let the team focus on marketing and audience rather than order management.

Why this one matters

FBM is usually chosen for margin. Sellers look at FBA fees, decide they can do it cheaper, and move to merchant-fulfilled without fully pricing what they've taken on.

What they've taken on is Amazon's performance standards with none of Amazon's infrastructure. Late shipment rate, order defect rate and tracking confirmation are all now your operational problem, measured continuously, with account standing attached.

That's why the boring parts matter disproportionately here. A same-day cutoff that's actually held, and tracking uploaded on time every time, are worth more to an FBM seller than any efficiency gain.

Questions this raises

What's the difference between FBA and FBM? With FBA, you send inventory to Amazon and they fulfill. With FBM, you or your 3PL handle storage, picking, packing, shipping and tracking, while Amazon still measures your performance. FBM gives more control and more responsibility.

How do you protect Amazon seller metrics? Hold the same-day cutoff, upload tracking reliably, and ship accurately. Late shipment rate and order defect rate are the metrics that put account standing at risk, and both are operational rather than strategic.

Can one 3PL handle Amazon and direct sales together? Yes, and it's the better structure. One inventory pool with synchronized counts is what prevents overselling in one channel while stock sits committed to the other.

How do you prevent overselling across channels? Real-time inventory sync, with every unit scanned at intake and again at pick. Overselling almost always traces back to counts that drifted from physical reality.

Can you handle a launch spike? Yes, with warning. Publishing demand often spikes off a media appearance or event, so telling us what's coming lets staffing and pick paths get set beforehand.

Want to learn more?

TCB will handle your FBM and direct sales the right way! Read more here.