Importing can be harder due to demand and restocking limits
In each 5-card pack, 4 slots pull from that main card pool, in a variety of rarities, from the normal Super, Ultra, and Secret Rares, to Starlight, Platinum Secret, and the unique Prismatic-style Ultimate & Collectors Rares found only in Rarity Collection sets
New shipments of Battle Styles have started being stocked as well as older sets of cards
Which is not too surprising
Against Dark-type decks, this is often enough to take knockouts, but it is often enough to set up for later knockouts or take down single-prize Pokmon in the early game against other strategies
Once you get the deck set up, its really hard to beat