Applying for the PMP is free but you need to meet the requirements to apply. One of the requirements is having 35 contact hours of project management. I personally had completed a Computer Management Module in Bachelors Degree so didn’t have to attend any extra classes to qualify. If you haven’t any previous project management education this is going to cost you money. To sit the actual PMP examination its costs $405 for PMI Members and $555 for Non-Members. To repeat the exam it costs $275 for Members and $375 for Non-Members.