what is the value of mewtwo pokemon card EX (61/162) (Jumbo Card) [XY: BREAKthrough] Weakness Darkness ×2 Resistance Fighting Mewtwo V 030/078 - Pokemon

I should note, however, that there are exceptions to the rule

Ninja of the Hand Pet Avengers Power Artifact Quicksilver, Brash Blur Roamer's Routine Serpent Specialist Shang-Chi, Martial Mentor She-Hulk, Attorney-at-Law She-Hulk, Jade Defender Songcrafter Mage Stature, Size Shifter Sustaining Spirit Synchronized Charge Thanos, the Mad Titan Training Grounds Ultron Drone Unending Whisper Unliving Legionnaire Ureni's Rebuff Viv Vision, Teen Synthezoid Volcanic Villain White Tiger, Ava Ayala Wild Ride Winternight Stories Wonder Man, Hollywood Hero Zenith Festival Zirda, the Dawnwaker

Some other decks seem to be forgotten by the modern playerbase, for one reason or another

Should a player come across this card, it is definitely worth keeping it in a sleeve and stored in a safe place