OK, so curiosity got the better of me and as I am not taking the exam till August I decided to split the cost of score 95 with a friend.
...DO NOT USE THIS QUESTION BANK!
It would be no exaggeration to say that more than 60% of step 1 questions on this bank is just pharmacology and drug side effects! In fact that may be an under estimation.
Just for the people who are confused as to why I didn't go for UW - I will in a couple months when I'm two months away from my exam.
You would be far better off saving your money and getting UW or even something as cheap as the BSS range is MUCH better than this heap of rubbish!