Found the ST figures today at Target. They also had some of the Terminator figures out as well.
They had both the 4" and 6" ST figures along with a couple role play items, the Enterprise and both the Bridge and Transporter playsets.
The figures look a little better in person than in the photos but the Kirk figure is not the best. Uhura looks good but she does have kind of odd legs. The others all looked fine with one other exception and that is, at first glance, Pike and Kirk don't look very distinctive. I could see someone (parent, gift buyer, someone who doesn't read) grab a Pike figure thinking it was Kirk.
Anyway, overall, the offerings look pretty good. I'm undecided on this though. While I'd love to put together the bridge and transporter playsets, I don't think I want to invest the money into all of the action figures needed to complete them. It's a fun set and nice to see a company try the build-a-playset theme on this scale of figure but part of me wishes that the playsets were another $10 and included everything they needed.
The 4" figures were $6.99 at Target. I don't think I've seen a price for them at WalMart yet. Same, similar? How about the playsets? $24.99 at Target.