A good site to play fantasy football for MONEY and to start now (Week 6)?

Hey all.

I am looking for the good website where I can sign up and play fantasy football for money and I can start now even thought we are at week 6, I love ESPN but if you sign up to a league you pay but you don’t win cash, which is dumb.

I want to be able to just give the site money with a credit card and then get money in return if I win. Simple.