It will take approximately 150 hours
to prepare for the Patent Bar Examination. 

The monetary investment consists of $300 application fees to the Patent Office, $165 for a testing fee paid to a commercial testing service, and $389 for the PassPatentBar training program.  Significantly, PassPatentBar offers a money back guarantee for their training program if you do not pass the Bar Exam.

U.S. Patent Office circa 1860

U.S. Patent Office circa 1860