look up any word, like b4nny:
 
1.
The exorbitant price that often accompanies first-party/highly recognized video games, named after Mario, the Nintendo character and mascot.
That reseller wanted $20 for Super Mario Bros/Duck Hunt just because it has Mario in it, damn that mario tax.

Everyone must succumb to the mario tax now, every collector must suffer.
by Vee Are Trooper October 01, 2013