Artefill for Chin Vs Traditional Chin Implant?

Increasing the vertical height of the chin is the one dimension that traditional chin implants do not do with the exception of a geniomandiobular groove implant made by just one manufacturer. The only reason to do fillers instead of going right to an implant is to see if you like the result that is created. If you don't then it is completely reversible. (although computer imaging will create the same effect) When it comes to economics the discussion of which is more economic is a very short-term view. Fillers are the least expensive option today but not in the long run. Fillers also can not give sharper definition to the chin which a well shaped implant can do if desired.

Cost should only be one factor and not the deciding factor in your decision for chin augmentation.  In general, I do not prefer using permanent fillers because there are some risks involved with it, mainly if you are unsatisfied with its placement and require surgical removal.  A better alternative would be a long lasting, but temporary, filler such as Radiesse or Perlane.  

If you are mainly interested in enhancing vertical height and not projection, a chin implant may or may not be the solution.  I would recommend a consultation to evaluate your current chin and how best to augment your chin to fit the rest of your face.  Please consult with a board certified specialist who can assist you in achieving the results you seek.