you also have to either polish the raw body yourself or pay the person who anodizes your gun to do it. Which is pretty expensive at places like PK Selective. White Wolf (whom I am chosing to anodize my gun) includes polishing in his anodizing prices which are still fairly low.
I recommend going with AKA let them do the ano and milling you want, they will try and get whatever design you want to do.
I used to play paintball