Visited Target yesterday, Black Friday, and I'm surprised that these are easy to find (the 1st wave was a smidgen harder to find). Maybe they're restocked evenly, or some of the sets just build up.
But anyways, every one of the sets, minus the 3PO/R2 set, was there, along with one or two of the 1st wave. I saw a little kid rummage through and choose the Dooku set, which, in my area, happens to be the harder-to-find set. Maybe it's because it's the only set to have 2 lightsaber-wielders.