You get everything from the standard Bundle, but shiny, PLUS a Collector Pack
That said, there are some sets that offer a lot more Commander cards than others with a reasonable price
Creatures (8) Lands (17) Spells (35) 4 Lightning Bolt 4 Sleight of Hand 4 Serum Visions 4 Opt 4 Manamorphose 4 Pyromancer Ascension 3 Noxious Revival 4 Faithless Looting 4 Thought Scour Sideboard Even if Izzet Phoenix is ready to give up the mantle of best deck, its ability to continuously adapt shows that it will remain part of the format for a while
Between the Poster Collection, the Binder Collection, and the Booster Bundle, I pulled several ex cards, a couple of Illustration Rares, and one Master Ball reverse holo that honestly looks better than I expected
Cards in each pack have set rates on the chance of pulling them