Money doesnt grow on trees!

So there is this tradition with kids who study abroad from my school in australia. Every semester at Monash Uni. they go on this 10 day trip which takes you a bunch of places and you get to do a ton of things like skydive, bungee jump, scuba diving, surfing lessons, booze cruise, etc. Well this year with flights included it costs 2700 AUD which is pretty much like 2500 USD, still a lot of money you know. Well i dont know about you guys but my parents aren't rich and they don't make a ridiculous amount of money. I'll fill you guys in, my ma is the only one in my house working because my dad got cancer and is on disability now, so its tough you know. My ma can't just throw me that kind of money. The trip is really huge tho and its tradition and everyone is going. It's going to be a major bonding moment and i feel like if i don't go i'm going to regret it and feel very left out. But if i spend all my money on this one trip how will i survive these next few months with no money? I'm still trying to figure it out in my head, i'm hoping it will all work out for the best. Of course i would love to go and have a great time and share memories with everyone but money really doesn't grow on trees, well at least for me it doesn't.