Laptop Charger... BROKEN!

Yup. My laptop charger on my good laptop broke. The little wires inside it broke apart. I tried to tape it back together, but it didn't work. So now, as soon as this battery on my MacBook runs out, I'm screwed. I have my crappy laptop that I used to use all the time. I guess that will do for now. But the things I can hardly do are use my tablet. So I can't draw, or go on iScribble. If I do, it fails. So, I don't think I will be happy much anymore. I like having a working laptop. >.> This really sucks because It's the school's and darn right I will have to replace it myself. So, that leaves me with five days to replace it. Anyone know where I can get a new charger cheap? lol