The price of a steel tundish is primarily driven by its capacity (tonnage), refractory lining material, and flow control technology. Buyers should specify the steel grade being cast, as high-oxygen or corrosive steels require magnesia-based or alumina-magnesia linings which are more expensive but offer higher durability. Additionally, the inclusion of flow control devices like dams, weirs, or turbulence inhibitors significantly affects the price but is essential for improving steel cleanliness and reducing inclusions.