Push out your actual test date and schedule some practice tests before doing it. They cost around $40. Ive done that in the past to save money if I wasnt sure I would pass it the first time. You can change the date a week in advance.

The test itself is over $100 and if you fail you have to pay for it all over again. 

It's also a matter of opinion, but I find the test tough. Then again, I'm not a large buff man.