S+: Brand New
S: Like New which means the item was once open, so you will see flap crease, but no damage overall on the item.
A: Excellent condition for a used item. Light scuffs, scratches, groove, minor dents. May have hairline scratches on the surface.
B: Good Condition for a used item. More scuffs, scratches, chips, dents, discoloration. More noticeable hairline scratches on the surface. May have sign of blemishes on the surface (dots like or localized area) or deeper scratch, groove, dent or discoloration.
C: Acceptable condition for a used item. The item was not cared for or kept in a safe area for its proper preservation. Will have noticeable scratches, grooves, dents, heavy discoloration.
D: Poor condition with damage beyond normal use. Not your usual wear and tear. Above average scratches, dents, grooves, etc…
E: Junk, look at the pictures, I am giving it to you as a present rather than
throwing it away.