Nice material in here and there is a wide variety of character possibilities represented. This is definately worth your measley $2.
To give you a better idea of what you'll be getting:
Chaos Monk = Variable strikes (holy, ghost touch, etc.)
Lasserator = Wuxia-style weapon master
Shadow Warrior = Ninja-esque master of stealth/misdirection
Snake Master = Ability score damager/immobilizer
Spiritual Defender = Holy unarmed combatant
Its nice to see a book of cheap classes and ones that are done so well.