07-08-2012, 09:45 PM
New parts are dropping in scratch (the real cash kind, I think) and since not everyone uses casts they can be found in the player shops for pretty cheap. Preview the item first to make sure you don't already have it though. I got a full set within 10 hours of them going into the game for maybe 10k meseta, the first one being 5k of that only 3 hours after release.
The head part is separate from arm/leg/body parts though, and is gotten via a ticket in the consumable section. I don't recall what the item is called.