yugioh cyber dragon deck 2011 Yu-Gi-Oh! Cards Revolution Structure : Toys & Games Ultra Rare Attribute Monster Type/Card Type Proto-Cyber Dragon - Yugipedia

Reason being that XYZ monsters dont have levels, they have ranks, and as such are completely unaffected by Gravity Bind

If you call it right, destroy 1 monster on your opponent's side of the field

A Grade 9 (Mint) allows for only the most minor imperfections, perhaps a fractional centering deviation or the faintest trace of corner wear that falls just outside the tightest tolerances

destroy all "Blaze Accelerator" cards you control, and if you do, destroy as many monsters on the field as possible, then, Special Summon 1 "Wild Fire Token" (Pyro/FIRE/Level 3/ATK 1000/DEF 1000) in Attack Position

But in this case there is literally one copy of that card in existence and a celebrity apparently worth over $50 million decided he wanted it: it's the definition of a one-off valuation