When comparing prices, you must distinguish between Single-mode (OS2) and Multi-mode (OM3, OM4, OM5) fibers. Single-mode is typically cheaper per meter but requires more expensive transceivers, while Multi-mode is costlier for the cable itself but cheaper for short-range electronics. Key metrics include Attenuation (dB/km), Bandwidth capacity, and Tensile strength. Ensure the fiber uses G.652.D or G.657.A1/A2 standards for bend sensitivity, as these affect both the long-term maintenance costs and the initial purchase price.