According to a large number of users on the Destiny subreddit, Best Buy is cancelling pre-orders for the Ghost Edition of the game. Specifically, the cancellations seem to be happening to PS4 pre-orders, as the demand was so high that they actually overbooked the total allotment. Xbox One users aren't reporting issues and can confirm their pre-orders are still being honored.
It's possible that scalpers learned of this early on, which is why they're currently going for two to three times their retail value online.
Best Buy is cancelling orders [reddit]
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