Tragus and Double Cartilage piercing?

I was think about getting a Tragus and Cartilage piercing on my right ear. I already have an Industrial on my left plus two ear lope piercing on both ears. I just want any Information like healing process and what can I change them, what is the standard G. Just your personnel experience with them and pain wise. pros and cons, etc. Any information you have the better. I have yet to tell my mom that I want a Tragus, I told her I want a Cartilage but not a Double one, so. And where can I get it done at a tattoo pallor or a regular piercing store in the mall? whats the cost?