^^ I would charge a little more then that. Personally I would not do it for less then $30 (maybe $20 if its a smoking hot girl and she is into me). Just the cost of the stuff is what would dictate my price. I am a novice with headlights (have only done about 4-5 sets, my neighbors asked me to do theirs) and it takes me about 10 min per headlight. Some of these guys here can probably do it in half the time. So time-wise its quick and easy however price wise it can get up there. I do not use kits like these guys (not sure how they compare to what I have used) but I just use a few different grits of sandpaper then I get some plastic restore stuff and use a buffing wheel on a cordless drill to bring back the clarity. It would cost me about $4 or so maybe (that paper eats you up because it gets clogged with grime and such).