When comparing prices, you must look beyond the surface. Key factors include resin type (Orthophthalic, Isophthalic, or Vinyl Ester), as Vinyl Ester offers the highest chemical resistance but at a premium cost. Additionally, check the glass fiber content; a higher glass-to-resin ratio increases tensile strength and load-bearing capacity. Ensure the grating thickness (typically 25mm, 30mm, or 38mm) matches your structural requirements, as thinner panels are cheaper but may fail under heavy industrial loads.