Planned Parenthood Birth Control Cost??

I'm about to go to planned parenthood for the first time to start taking the pill. I'm in high school (about to turn 18) but I work part time so money isn't a huge issue. I have insurance through my parents but they don't approve of birth control, so I don't have access to my medical card and I'll need total discretion from the clinic. I just want to know what the experience will be like and how much/when I'll pay for the services and birth control.