The price of a parachute is primarily driven by the fabric type, porosity, and tensile strength. High-performance parachutes utilize Ripstop Nylon (Type 6.6) with a specialized silicone or polyurethane coating to ensure zero-porosity, which is essential for consistent lift. You must verify the denier count (typically 20D to 40D) and ensure the breaking strength of the suspension lines (e.g., Spectra, Vectran, or Dacron) meets international aviation standards. Higher prices often reflect reinforced bartack stitching at high-stress points and the use of UV-resistant materials that extend the gear's lifespan.