Ya, there is really no way to give you a straight answer of "if it is worth it". If you are talking about financially, then there is still no way to answer it b/c we don't know your current experience, or what you want/plan to do. We also don't know if you are taking out loans, and how much to you stand to benefit from the program.
USC.PM has a great reputation out here in a SoCal (just behind UCLA, but ahead of UCI, LMU, Pepperdine, etc..) and will offer you great access to socal jobs.
USC is a great school, but the "is it worth it" question is a very personal one, and you are probably the only person that can answer this for yourself.