Why was the shipment inspected?
What does an inspection cost?
Inspection fees, storage during the check and any re-handling are usually charged to the importer. The amounts depend on the port and the type of inspection, so ask for the schedule of charges as soon as the inspection is notified.
How to shorten the delay
Respond with documents the same day, keep the broker authorised to answer questions, and never argue with the inspection result on the spot. A prepared file and a fast broker turn days into hours.

