There are a lot of resources including this one that you can explore first rather than paying for a professional classroom course or online course. I am not saying that you should not do that but may be it is not needed. In my view the professional courses are good for keeping you locked up for sometime and help you focus/ cram the content before the exam. However, if you do can find sometime during the day, have a lot of experience and do not mid going through 400 pages a couple of time. You can save this money. (I did my certification some years ago by just reading through PMBOK once.) Unless, you company is interested in your professional development at that point in time and is paying for it..