Why would anyone buy a Power Core Combiners figure if it doesn't come with the pieces that make it a combiner?
Because it's a Transformer that only cost $2.50 when Target tries to get rid of them.
Other than that, there's no reason to get one of these things. Hell, I can't even think of anything particularly interesting to say about it other than that the minicon is actually useless and annoyingly doesn't fit into any of its pegs well. Wasn't the whole