Like most Pokmon cards, the value of Mega Gardevoir ex depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Mega Evolution)
Even if other factors have lowered the bar to entry, getting into Yu-Gi-Oh
"Most other reputable shops I have spoken to say step number one of buying a graded card is to look up the serial, so when it came up invalid, they should not have purchased it in my opinion," Flopsies says
I recently made a sucker of myself and bought some so I could open a bunch of packs at onceI spent $20 and got not one single card I didnt already have, and only duplicated two special art cards across 20 packs
(Don't apply Weakness and Resistance for Benched Pokemon.) Switch this Pokemon with 1 of your Benched Pokemon