Best Online Real Estate Exam Prep!?!?!?

[Bill Adams]

Hi All - I am a licensed attorney and live in Missouri. The only requirement I have is to pass the test (the attorney status rids the requirement for hours, online course, etc). I am curious what would be the most cost-efficient way to get the license. I am looking for something online that will provide me strictly with what I need to know for the test in the shortest amount of time and with the least amount of money. I have a good foundation in real estate law and terminology. 

Thanks!