I bought the new OPI collection from a trade store last week, and it's gorgeous stuff (even though I'm going into winter now, I still wear whatever nail colour matches my outfit - dark polishes can be not so fresh if your hands are chapped from chill
Last time I went into a DJS (about three months ago), they had both.
I pay trade price for OPI polishes, so a standard bottle costs AU$9 and the mini sets are AU$15. I didn't know the complete line was so big until I saw the stand taking up half the wall!