Prioritize WMS/OMS integration, SLA commitments for picking and shipping, bonded warehousing if you export, scalable racking and labor flexibility, and transparent invoicing. Verify carrier partnerships for regional trucking and feeder shipping to balance transit time and cost.

Storage (per pallet or cu.ft.), pick/pack fees, cross-dock charges, and last‑mile carrier rates drive landed cost. Factor in inbound freight from manufacturers, export handling or customs clearance, and seasonal surcharges. Negotiate volume discounts and minimums to optimize unit economics.

Look for omnichannel pick strategies (batch, zone, single‑piece), real‑time inventory sync via API, returns handling, kitting/assembly, and reporting dashboards. Integration with marketplace and ERP platforms is essential for accurate, fast order routing and inventory allocation.

Assess feeder shipping schedules, trucking lane frequency and transit times to major hubs, and proximity to air cargo options. Evaluate consolidated vs direct shipping, transit-time SLAs, and contingency routing for peak seasons or port disruptions to maintain consistent delivery performance.

Confirm the 3PL provides bonded warehousing, experienced customs brokerage or partnerships, accurate HS classification support, and electronic documentation submission. Review historical clearance times and dispute resolution processes to reduce customs hold risks and unexpected costs.