There are tons of Grading scales online, along with widely different definitions on what, say, a "Good" vs. "Near mint" rating is.
So, is there an agreed upon definition here?
For instance, "Poor" to me means obvious play-wear, whitening on black border cards, but not "marked" if used in a deck of mixed quality cards. Some sites grade "Poor" as obviously marked, creased, or torn edges, etc.
If not, can we make one? 
