Well, I saw a couple of negative commenting here, but my experience was little bit different. As I was worry for the preparation and about passing my Microsoft AZ-204 exam. Actually I had not time to give to my study. I was surfing internet and found CertsHero.com, I immediately decided to buy the study material from this site with both expectation "Pass or Fail". Because according to my situation, it was necessary to take risk and I took it.
Oh My God! I have no word to express my feeling as 95% questions were same which I prepared for this exam... I must say thanks to CertsHero played a great role to achieve my goal...
I think, it may possible that many students not even try to prepare all questions from this material/ easiest way, and this can be the major cause of failure.