When comparing prices, you must look beyond the unit cost and evaluate Luminous Efficacy (lm/W), as higher efficiency reduces long-term energy costs. Ensure the Rated Average Life is at least 8,000 to 15,000 hours; cheaper units often fail prematurely. Additionally, verify the Color Rendering Index (CRI)—a CRI of 80 or higher is standard for quality indoor lighting. Always check the Ballast Type (electronic ballasts are preferred for flicker-free operation) and Base Type (E26, E27, or B22) to ensure compatibility with your target market's infrastructure.