Based on the demos of Poser 5 that I saw at DragonCon, the Face Room is code that was developed externally from Curious Labs. It has a set of morphs that are used to modify the face. These are different morphs from the ones available in the Pose Room. It is the modification of the head part of the model and the creation of these morphs that apparently is very expensive to do. In addition to creating the numerous morphs for the Face Room, the head model needs to have the geometry at the neck done so that the head from the Face Room can be put back on to the model. Add to all of that the requirements for the photo mapping and it gets time consuming and expensive. All of this information is based on what I saw and heard at DragonCon and could have no basis in reality.