When sourcing nylon fabric, the price is primarily driven by denier (D) count, weave type, and density. For instance, Nylon 6 vs. Nylon 6,6 differs significantly in price; Nylon 6,6 is more expensive due to its higher melting point and superior abrasion resistance. You must verify the GSM (Grams per Square Meter) to ensure the fabric thickness meets your application needs. Additionally, check for functional coatings such as PU, PVC, or Silicon coating, as these treatments can increase the base price by 15-40% but are essential for water resistance and durability.