For the cheap modern singles that fill most collections, grading fees and wait times eat the gain, so sell those raw with an honest condition description
Without access to Trainer cards, the opponent can't use Pokmon Reversal () to target your Benched Pokmon or use Plus Power () to guarantee Knock Outs on your key Pokmon
Tests have been made for everything such as figuring out what foil cards will look like, what a potential new card frame could be, how to add the holograph authentication stamp, and even tests for the recent 'meld' mechanic
However, LP and NM copies break the scale, with the former boasting a sale at $550
Like the previous two, it's a great finisher after someone has some poison like 5 or 7 to finish them off from early damage before they can set up defenses