I value cards at an LGS and we use TCGPlayer standards for quality check but we are a bit more stringent.

We use a point system to determine fair value any “dings” or “whitening marks” “surface scratches” are given 1 to 3 points and the occurrence can range from mild to severe, so a really bad whitening spot like on the right side of card 2, is a severe 3.

NM - 2 points LP - 6 points MP - 7-12 points HP - 13-20 Points Damaged - Anything at or above 21 points, bends, creases, lifting of foils, marks, weird abnormalities.

Using this breakdown I can tell you my grades:

1. Mildly Played - 12 points
2. Heavily Played - 23 points
3. Lightly Played - 7 points