Maybe ask for review books or $ for a graduation present? The certification exam is expensive and necessary so this is not the time to be too thrifty.
I bought the Fitzgerald CDs and accompanying book on ebay for 1/2 the msrp of $500ish. I am glad I didn't pay that much, but it would have been worth it. I don't think it would be nearly as helpful without the book though. I just bought the Hollier practice question book as well due to the good reviews, although I haven't opened the Amazon box yet. I did find that on ebay as well, but I wanted a new one with no chance of questions already being answered. That was worth a few dollars more to me...I think I paid $40 for it. Hollier also makes a review book. I can't remember if she also made audio CDs.
Good luck!!!! When do you graduate?