When assessing the price and quality of outdoor advertising displays, you must prioritize Brightness Levels (measured in nits); outdoor units require at least 5,000 to 7,000 nits to be sunlight-readable. Additionally, check the IP Rating (Ingress Protection), where IP65 or higher is mandatory for water and dust resistance. The Pixel Pitch (P-value) significantly impacts cost; a smaller pitch like P3 or P4 offers higher resolution for close-up viewing but increases the price compared to P8 or P10 for long-distance viewing.