When assessing the price, you must look beyond the exterior design. Key technical factors include the LED chip brand (e.g., Cree, Osram, or Bridgelux), which determines longevity and light decay. Ensure the driver (power supply) is constant current and has a power factor (PF) > 0.9 to ensure electrical efficiency. Additionally, the housing material significantly impacts cost; die-cast aluminum offers better heat dissipation than plastic or thin iron, justifying a higher price point for long-term durability.