He retired to focus on his business of selling Pokémon and sports trading cards called Blake's Breaks. CNBC referred to Martinez's venture as a "side hustle'' that, according to documents obtained by the organization, brought in brought in more than $8.3 million in revenue.
One rare Pokémon card reportedly went for $672,000.
Martinez sold his cards on Whatnot, an online social marketplace that allows users to sell products to each other.
In August, he was "permanently'' removed from the site and accused of scamming buyers.
"After a comprehensive investigation into [Blake's Breaks'] operations, we have decided to permanently remove the seller from our platform,'' the site said in a statement.