No Grade: A brand-new, item. Original manufacturer's warranty, if any, still applies, with warranty details included in the listing comments. Original packaging is present for most.
Grade A: A pre-owned product that has been inspected and tested to work and look like new. The product has minimal to no signs of wear, no visible cosmetic imperfections
Grade B: The item shows wear from consistent use, but it remains in good condition and functions properly. The item may be marked, have identifying markings on it, or have minor cosmetic damage.