Each sample deck contains basic lands, commons, 4 uncommons and 1 rare. Besides the Welcome Deck 2016 cards the decks also contain cards from Battle for Zendikar, Oath of the Gatewatch and Shadows over Innistrad.
The Kaladesh Booster Battle Packs themselves are not available at Wizards Play Network stores, but only at large "big-box" stores like Walmart or Target.
- Blake Rasmussen (September 6, 2016). "Kaladesh Packaging, Promos, and Planeswalker Decks". magicthegathering.com. Wizards of the Coast.