Even if you buy the Snap BP for the card, you still have to have the other cards necessary to make the deck work. I've just started last month, and have been playing every day for the last 6 weeks. I'm collector level 650 or something and I'm missing most of the cards necessary to build any of the meta decks. It really only makes sense to always go for the BP if you have most of the cards anyway. If you don't, the card included with the BP may even be completely useless. Technically it's a pay to win mechanic, but in reality it's probably not for most people.