Getting a job

Hello I am an american college student and I plan on moving to Prague I'm august after I graduate ti get a job teaching English. Most of the programs I have found have you pay a large amount of money to get the tefl certificate (which I already have ) and then they place you in a school. I was wondering if anyone has any help or information as to how I can find a job on my own and what the difficulty level of doing that is. Thanks