When sourcing at distributor prices, you must look beyond the price tag and evaluate the Luminous Efficacy (lm/W), which should ideally be ≥100 lm/W for standard commercial lighting. Ensure the LED Driver is from a reputable brand (e.g., MeanWell or Philips) as the driver is the most common point of failure. Additionally, verify the Color Rendering Index (CRI) is at least Ra>80 for general use or Ra>90 for retail/art displays, and confirm the Heat Sink material is high-grade die-cast aluminum to prevent thermal decay.