Yeah, all the ones sold like that contain synthetic cannabinoids. I havn't tried many of the blends that i've seen retail (I smoke Ambush, Trance, or a home-made CP-55,940 blend when i'm not smoking real pot) and, in any case, random producers are using well known names for their own product, so the names of brands are of questionable value. There are huge differences between blends, both in terms of potency and the qualitative aspects of the high.
Just try out a few, and smoke real careful at first, because some of the blends are ridiculously strong, and if you smoke too much of an unforgiving blend, you'll feel like crap (you know, like if you smoke so much weed that you get all anxious and paranoid? Some synthetics are much less forgiving of smoking too much - while it's not physically dangerous, it can be quite traumatic)
Be aware that you can get them online cheaper than in the stores, but obviously we can't talk about that on BL (no sourcing). Some of the online producers will tell you exactly what cannabinoids they use, though i've yet to hear of a blend sold in stores revealing that information.