If you feel like trying your luck, here are the lines for UFC 87.

Here is a basic course for how to read these numbers, based on a $100 system:

(-) is for the favorite
This reads that if you bet the amount after the (-) you will win $100

ex) Brock Lesnar
BetUS: If you bet $260 for Brock and he wins, you will win $100
Bodog: If you bet $240 for Brock and he wins, you will win $100

(+) is for the underdog
This reads that if you bet $100, you will win the amount after the (+)

ex) Heath Herring
BetUS: If you bet $100 for Heath and he wins, you will win $200
Bodog: If you bet $100 for Heath and he wins, you will win $190

You can bet as much or as little as you want and these sites will calculate what you can win. Good luck everybody!