What factors influence the price of a 500 kVA oil filled transformer?

Price is driven by core steel grade, copper vs aluminum windings, efficiency and loss guarantees, insulation class, cooling design, tap changer type, enclosure and corrosion protection, accessories, testing scope, and standards compliance. Logistics and installation costs can be significant due to weight and oil volume. Market factors like copper and electrical steel prices, lead times, and local certification requirements also heavily impact final procurement cost.