go up to 200 and the Martin Hunter or Mamba are great begginer bows. They do however frequently go from 170-200 bucks.

There is another great site for used bows. One being here, from time to time there are a few decent deals. Or you can go to http://www.women-outdoors.com/traditional There is a super list of classifieds there including most if not all the other big classifieds sites in her list.