Wicked sheet music??

Me and my bestfriend are looking for any Wicked sheet music. Is there a website where there is free printable music for pianos...our parents wont let us buy it but we really want to try playing it on the piano...thanks!!!! if not, is there any websites where it is cheaper..we have come across websites where they want like $6-$10 for one song, I love playing piano but can't just print alot of songs for that much money for one song.