Prioritize WMS/API integration, SLA specifics for pick/pack and shipment cutoffs, scalability of floor space and labor, returns handling and value‑added services, and track record with similar SKUs. Request throughput metrics, onboarding timelines, exception rates, and client references to validate performance.

Close access to port terminals and primary highways reduces drayage and overland transit, lowering cost per shipment and improving lead times. 3PLs with established contracts for consolidated trucking lanes and regional carriers can offer better rates and predictable transit windows for Argentina, Brazil, and domestic lanes.

Model occupancy/rent, utilities, labor, equipment and racking, WMS fees, handling rates (per pick/pack), inbound/outbound freight, and customs or bonded storage charges if applicable. Include seasonal labor variability and potential fuel or surcharge adjustments to estimate a true landed fulfillment cost.

Expect capabilities for bonded storage and customs documentation, single‑window export processing, consolidation and deconsolidation, labeling and rework, and cargo inspection facilitation. These services reduce export lead times, simplify compliance, and support bundled B2B shipment workflows.