Some money leagues can be very competitive, especially ones advertised here. Yahoo public leagues are also notoriously bad. I would suggest trying some yahoo private leagues which offer at least some more degree of difficulty.
If you are set on a money league, I would first try to just do one with a group of your friends or coworkers. Looking on the classifieds section, while this isnt a guarentee, someone with 1000+ posts is usually well-respected and known around here and probably will not scam you out of your money.
Dodgers World Champs 2012