How Much Would This Ticket Cost? Help!?

i had a party at my house with about 15-20 people, we were all underage, but it was my house so when the cops showed up from a noise complaint, i was the one who got the ticket and has to go to court in july. on the ticket i was charged for "making alcoholic beverages available to minors" i know that's a serious charge, but im only 18, so i am a minor, i haven't had any underage drinking offenses before, in fact, i only have 2 traffic tickets. apparently i have to have my money ready at court for the ticket as well as the court fee, but i don't know how much it is going to be, my friends said they'd chip in so im trying to see how much each person should pay. help me! thank you!