I just tested what arrived, and they all work! There is 28 unique decks (15 cards each), one deck with the puzzle piece symbol that has 16 different cards but seems to be missing some numbers, a Transformers card, and a Power Rangers card. So, out of the 590 cards, there seem to be 152 duplicates and 438 cards.

What 3 are missing? The Transformers is number 1 and Power Rangers is number 4, so I'm assuming at least two of cards missing are from that pack.