I've been supporting PC's and Macs for near on 16 years now, and have never really seen the need for certifications in the past... But I'm thinking about challenging myself by taking Mac OS X Help Desk Essentials (v10.3)

Before I pony up $150 to take the test, has anyone out there taken it? Is it worth it in the long run? How... "difficult" is the exam?

Any help appreciated.