Pokemon booster boxes are boxes of booster packs. They are how the booster packs are transported after being manufactured. They will generally have 36 packs in each Pokemon Booster Box. One advantage to buying a pokemon booster box instead of single booster packs is that you have a better chance of getting Holo Rare and Ultra Rare pokemon cards. Another advantage of buying a pokemon booster box is that it is a lot cheaper per pack and per card than buying booster packs. A pokemon booster box of 36 booster packs will have 360 cards.