According to a leaked Best Buy iPad playbook, each store getting the iPad for D-day is supposed to receive exactly 15—five each of the 16, 32 and 64GB versions. Again, they won't be on the website, and there might be another round of iPads on April 11, if Apple doesn't hold stock back for its own needs. In other words, Best Buy isn't much of a backup plan if you haven't already pre-ordered, and if you're gonna camp out, you're probably better off at an Apple Store. [TUAW]