We use the following system for grading our cards:
MINT: card looks freshly printed (rare). NEAR MINT: no edge and corner wear, near perfect. EXCELLENT: has only light edge/corner wear. VERY GOOD: may have light edge/corner wear, minor surface wear/soil, minor bends/creases. GOOD: may have moderate edge/corner wear, moderate surface wear/soil, moderate bends/creases. FAIR/POOR: greater flaws than previously described and only sold in damaged lots. PLEASE NOTE: we do not grade backs.
The above criteria are shown in every listing for your convenience.