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Operational Costs, Billing And Best Practices For CastleGate Storage

Fulfillment
Updated August 1, 2026
William Carlin

CastleGate Storage

Definition

The warehousing of supplier-owned inventory within the CastleGate fulfillment network.

Overview

CastleGate Storage The warehousing of supplier-owned inventory within the CastleGate fulfillment network. This arrangement separates ownership from operations: suppliers keep title while CastleGate delivers receiving, storage, fulfillment, and distribution services under a contractual billing model.


Understanding how costs are structured and how to manage billing disputes is essential for suppliers using CastleGate Storage. This article breaks down typical line-item charges, contract clauses to watch, sample cost scenarios, and operational best practices that reduce disputes and hidden costs.


Common Cost Components


CastleGate’s invoicing usually itemizes activities so suppliers can reconcile charges against activity logs. Typical cost components include receiving, putaway, storage, pick/pack, outbound handling, labeling, kitting, returns processing, and freight. Specialized services—temperature control, hazmat handling, expedited receiving—attract separate fees.


  • Receiving Fees: Charged per pallet or per SKU line, often higher for unplanned or mis-labeled shipments.
  • Storage Fees: Daily or monthly charges per pallet, per cubic foot, or per bin. Long-term storage premiums apply for inventory beyond agreed thresholds.
  • Fulfillment Fees: Pick, pack, and handling charges per order or per unit with surcharges for special packaging.
  • Return Processing: Fees per return, plus disposition charges for restock, quarantine, or disposal.


Billing Triggers And Reconciliation


Because ownership stays with suppliers, invoice reconciliation focuses on activity accuracy and inventory levels. CastleGate will typically provide transaction-level reports and proof-of-action (e.g., scan logs, carrier tracking). Suppliers should reconcile daily or weekly and define an escalation process for disputed line items. Contract terms should specify dispute windows and billing hold procedures.


Insurance, Shrinkage, And Claims Handling


Contracts often clarify who covers inventory insurance and how shrinkage is handled. With supplier-owned inventory, suppliers may be required to maintain insurance and to accept certain shrinkage thresholds. Claims procedures should define timelines for damage discovery, evidence required, valuation approaches, and whether CastleGate pays claims directly or assists suppliers with third-party claims.


Cost Example: Monthly Cost Model


Example for a mid-size supplier storing 200 pallet positions and fulfilling 5,000 orders per month:


  • Receiving: 50 inbound pallets @ $25/pallet = $1,250
  • Storage: 200 pallets @ $8/pallet/month = $1,600
  • Pick/Pack: 5,000 orders @ $1.50/order = $7,500
  • Outbound Handling: Carrier charges passed through; CastleGate adds $2,000 handling markup
  • Returns Processing: 200 returns @ $5/return = $1,000


Total: $13,350 before freight and exceptional services. Suppliers should model seasonal peaks, long-term storage surcharges, and additional services like labeling or kitting that can materially increase costs.


Contract Clauses To Negotiate


  • Rate Lock Periods: Fix rates for a set term or define allowable annual adjustments to avoid surprise price increases.
  • Service Level Agreements: Define receiving, pick accuracy, and order turnaround times with measurable KPIs and penalties for nonperformance.
  • Dispute Resolution: Set a clear process and timeframe for invoice disputes, including temporary billing holds.
  • Inventory Valuation: Agree on valuation methodology for damaged or lost goods to prevent subjective claims.


Operational Best Practices To Control Costs


Managing CastleGate Storage efficiently saves money and reduces friction.


  • Pre-Receive Communication: Send ASNs and packing lists in advance to minimize receiving rework and fees.
  • Standardized Packaging: Use consistent pallet patterns and labeling to speed putaway and lower receiving labor.
  • Inventory Turn Optimization: Reduce long-term storage fees by aligning replenishment and promotions with on-hand turnover.
  • Automate Reconciliation: Use API/EDI integrations for daily inventory and activity feeds to catch billing errors quickly.
  • Return Policies: Define return dispositions (restock, refurbish, destroy) in advance to avoid ad-hoc costs.


KPIs Suppliers Should Track


  • Inventory Accuracy: Cycle count variance vs WMS target (e.g., <1%).
  • Order Accuracy: Pick/pack accuracy percentage; aim for >99.5% for direct-to-consumer.
  • On-Time Fulfillment: Orders shipped within contracted SLA window.
  • Cost Per Order: Total monthly cost divided by orders fulfilled.


In short, the CastleGate Storage model places operational responsibilities with CastleGate while suppliers retain title—and the corresponding accounting and many risk considerations. Clear contracts, accurate data integration, proactive reconciliation, and standardized inbound processes reduce costs and disputes, making the model efficient and predictable for both parties.

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