The advertising pretends it's a 4 pages document. The class itself is in fact 3 pages, with the 4th being the OGL (i.e.: the legal stuff). The layout is nice, screen sized (so to print, won't be easy). The class itself is well done, but not overly original. This document should have included a NPC or two, but it's not the case. The good point is that the entirety of the thing is OGC, so I can put it in my document for my campaign setting without fear of copyrights infringements. 1$ the PDF may look cheap, but if you think about it, it would make a 60 page PDF for 20$ which is way overated for a simple PDF (At this price you get a 120 pages printed book)... All in all, I would say: buy only if you seem to really need one of the concepts presented. Myself I needed some Chaos-based classes and bought the two on this subject. Not bad, but not exceptional either.
[3 of 5 Stars!]