To optimize costs, negotiate SKD (Semi-Knocked Down) packaging if the animal lights have protruding parts (like ears or tails), as this significantly reduces volumetric weight and shipping costs. For orders exceeding 2,000 units, aim for a 15-20% volume discount. Additionally, clarify the Incoterms; while FOB (Free On Board) is standard, requesting CIF (Cost, Insurance, and Freight) might be more convenient for first-time buyers, though FOB usually offers better long-term control over logistics expenses.