Like most Pokmon cards, the value of Rayquaza VMAX 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 (Evolving Skies)
You could play a Trainer and not even play a Pokmon

April O'Neil, Kunoichi Trainee Azra Smokeshaper Biting-Palm Ninja Blade-Blizzard Kitsune Casey & Raph, Hotheads Chrome Dome Coiling Stalker Covert Technician Dark Leo & Shredder Definitely Not a Turtle Dokuchi Shadow-Walker Dokuchi Silencer Don & Leo, Problem Solvers Don & Raph, Hard Science Donatello, Gadget Master Donatello, Mutant Mechanic Donatello, Rad Scientist Donatello, Turtle Techie Donatello, Way with Machines Donatello, the Brains Donnie & April, Adorkable Duo Elektra, Daughter of the Hand Fallen Shinobi Fang of Shigeki Foot Elite Foot Mystic Foot Ninjas Futurist Operative Heroes in a Half Shell Higure, the Still Wind Ingenious Infiltrator Ink-Eyes, Servant of Oni Inkrise Infiltrator Jennika, Bad Apple Big Sister Kappa Tech-Wrecker Karai, Future of the Foot Kotose, the Silent Spider Koya, Death from Above Krang & Shredder Leonardo, Big Brother Leonardo, Cutting Edge Leonardo, Leader in Blue Leonardo, Sewer Samurai Leonardo, Worldly Warrior Leonardo, the Balance Lita, Little Orphan Amphibian Masterful Ninja Mechanized Ninja Cavalry Michelangelo, Game Master Michelangelo, Improviser Michelangelo, Mutant BFF Michelangelo, On the Scene Michelangelo, Weirdness to 11 Michelangelo, the Heart Mikey & Don, Party Planners Mikey & Leo, Chaos & Order Mikey & Mona, Mutant Sitters Mist-Syndicate Naga Mistblade Shinobi Moon-Circuit Hacker Moonblade Shinobi Moonsnare Specialist Mukotai Ambusher Nashi, Moon Sage's Scion Nashi, Searcher in the Dark Nezumi Prowler Ninja Ninja of the Deep Hours Ninja of the Hand Ninja of the New Moon Okiba-Gang Shinobi Orochi Soul-Reaver

Have you already won a game with some of the trickier wincons
So, it's sort of like adding it to your second hand