Because they’re custom-made and can’t possibly be done in time for the Finals:
Utterly captivating, Limited Edition, authentic HERSTAR™ Custom Crystal Pumps representing the Oklahoma City Thunder. Encrusted, dazzling, and intensely mesmerizing with every step, these elite pumps command a presence of their own. Fully hand strassed in luxurious, hand selected Middle Eastern crystals, then offset by a sky-high 6″ heel and 3″ internal platform; these glittering heels glisten on the court and off. They are simply magical to behold. Step into these shimmering, sparkling pumps and be ready to light up the games.
There’s an upgrade to real Swarovski crystals available, at a much higher price. If you can live with the more mundane crystals, these will cost you $295. And yes, the NBA is actually licensing these.
(Plucked, of course, from the tweetstream.)