Proactiv Treatment?

My best friends (theres 3 of them) have proactiv and they said its truly amazing. I tried it 2 days ago at one of my friends house and already my face has changed and became smoother. So i finally convinced my mom to buy me some in a few hours. Were probably going to order it by phone. Do you think thats the best way to get it/ since it seems alot more cheaper? And do you suggest I get the green tea moist. or the refining mask? Since you can get one as a free gift.