Is the price for a new passport or a renewal?
Same exact process as the original application. The only difference for us when we renewed/reapplied for child passport is that the post office only sent their original passport with application and not birth certificate. Have both on hand of course.
It actually may be the hardest thing. Have you tried to photocopy a license lately? With all the holograms and security things, it is really hard to get a good copy without glare taking out a piece of information, and then to have to do it on both sides? Tough.
I had to send a copy of my license to DCL and it took several tries, and even then the TA wasn't sure if it was good enough.