What are good monologues for 12-15 year old's?

Help! I have an audition in a week, and i need a good monologue that is 1-2 minutes long. I need a 4 minute long one to for a later audition. And a good song? Oh, and how much does an acting agent cost? How much do acting classes cost in Ohio? i'm kinda new to this any one have any tips? stories? or anything to help me out? thank you for your help! 5 stars for best answer ! :]