YGO TCG Dark Saviors Booster Display - Rules of Play says:
1 box of 24 Dark Saviors boosters. Each booster pack contains 5 cards.
Dark Saviors reinvents the Vampires of Yu-Gi-Oh! with a new series of cards that can enslave your opponent’s monsters for your own nefarious schemes with a single bite! You can build a Vampire Deck with just the cards in Dark Saviors, but you can make your Deck even stronger with the new “Vampire” Link Monster from Flames of Destruction and cards from Structure Deck: Lair of Darkness.