The price of vanadium catalysts is primarily driven by the V2O5 (Vanadium Pentoxide) content, typically ranging from 4% to 9%. Higher concentration levels generally command a premium. Additionally, the physical form (pellets, rings, or stars) affects the effective surface area and pressure drop characteristics, which are critical for sulfuric acid production efficiency. Buyers should also verify the conversion rate efficiency (ideally >99.5%) and the ignition temperature, as these performance metrics directly impact long-term operational costs.