2013 Pokémon XY Black Star Promos

70 of the 209 priced cards in 2013 Pokémon XY Black Star Promos list at $30 or more raw on TCGplayer. Grading at PSA runs about $25 to $30 a card once shipping and insurance both ways are counted, so those 70 are the cards where a high grade can pay for itself. For the rest, a grade usually costs more than it adds.

The deciding question is condition, and that is what the scanner reads: photograph the front and back and The Hobby Treasury scores centering, corners, edges and surface, gives a PSA-style estimate, and makes the worth-submitting call before you pay a fee.