I think when I got mine done, it was $60 per line on the front and $32.50 for the back. It may have went up a little since then, not sure.
Never thought of the clip. It is something that you could move from large sebenza to small sebenza to umnumzaan, and even the Ti-Lock so it is kinda of a cool idea. Just very limited to initials or a date or something similar.