Focus on measurable operational capabilities: SLA-backed pick accuracy, slotting and storage density, outbound throughput (orders/hour), returns processing, and technology integration (WMS + carrier APIs). Also confirm yard capacity, refrigeration if needed, and contingency for seasonal volume spikes.

Carrier density and predictable transit windows reduce expedited freight usage and inventory safety stock. Reliable regional carriers enable lower zone-based rates, tighter delivery promises, and improved on-time metrics—directly lowering per-order fulfillment cost and improving customer satisfaction.

Compare landed cost components (storage $/pallet/day, pick/pack $/order, inbound receiving $/pallet), SLA terms (OTD, accuracy), technology fees, minimum monthly charges, and value-added service pricing. Consider average dwell time and slot utilization to model true operating cost.