2 exercises a class 2 and a gold prep usually both mandibular unless they change it this yr... 5 cases will be given to you to practice a case presentation on out of which one will be chosen on that day....nothing to complicated everything oral no slides or presentations..
you usually have 1 month from the time they send the interviews to the time of your exam....if you seriously practice you need no more than a couple of days of practice, what takes time is arranging the material recquired for the practice so you may want to get on that.
The manual has everything you need for the bench and one on one interview... as far as the one on one with case presentation, you'll are all doctors and you'll know what one persons perfect treatment plan is might not be anothers... so they are not looking for perfect treatment plans just seeing how well you can communicate and whether you make an ideal candidate for nova , one whom the faculty will be able to get along with for 3 yrs...
ofcourse do not make a mistake like if the BP is 180/110 you decide to do an elective therapy without a medical consult ( this is just an example)
as for the fees i think they are $2500 if i remember .... do not even think about the money because if you do get it it will be the best $2500 you ever spent in your life... if you don't wanna challenge yourself you will regret...