Focus on measurable KPIs: on-time shipment %, pick/pack accuracy, inventory turns per SKU, and average fulfillment lead time. Confirm WMS/API or EDI integration, real-time inventory visibility, SLA terms with penalties, scalability of footprint and workforce, returns handling, and experience with your product types (fragile, temperature-controlled, kitting).

Evaluate proximity to major highways and regional interchanges, local rail spurs, and road distances to Port of Koper and nearby urban distribution centers. Assess cross-border routes to Austria and Croatia, availability of LTL consolidators, and local carrier density for last-mile options; these factors drive lead times and zone-based freight costs.

Pricing commonly includes storage (pallet or m2/day), receiving and putaway, per-pick and pack fees, monthly minimums, and surcharges for special handling or kitting. Watch for fees for returns processing, long-term storage, IT integration/setup costs, fuel surcharges, SLA chargebacks, and minimum throughput clauses that can create unanticipated expenses.