Bleecker Trading Pokemon Japanese: 151 Booster Box What is the expected value of a Japanese Pokemon 151 Booster Box? Double Sleeved MEGA EVOLUTION PULL RATES ARE IN! After opening 5,000 packs, here's the breakdown on what you can expect when hunting the chase cards: Mega Hyper Rare (MHR): 1 Amazon.com: Pokemon Card Game Scarlet & Violet Enhanced Expansion Pack Pokemon Card 151 Booster Box (Japanese) 20 Packs : Toys & Games Collect 151 Hope Everything You Need To Know Collect 151 Everything You Need To Know