Walmart offers the Pokemon XY 8 Breakthrough Elite Trainer Box in Mewtwo Y for $31.97. Opt for in-store pickup to dodge to the $5.97 shipping charge. That's the lowest price we could find by $18. It includes eight booster packs, a set of deck sleeves, 45 energy cards, XY-Breakthrough expansion guide, six damage-counter dice, competition-legal coin-flip die, two acrylic condition markers, collector's box, and code card for Pokemon TCG Online.