Hendy,
They will be sold with one specific head each, and the option to pick up the others that are cast with it for a slight discount. The amount of customization that we've included takes up valuable space in the molds. I'm trying to keep the cost for folks down, but they will be on the pricey side, comparable to reaper but cheaper than Pulp City.
Some supers will have to come with all three heads though as a few won't fit others, like on the big guy or our Whiskers character that will come with all three heads and tails.