With all due respect to the author of AutoAccidentClaims website, there is no formula for figuring out the value of your case. Let me repeat that - there is no formula for figuring out the value of your auto accident case.
The author of this website is selling a book. His book, with his formula. But, formulas do not work. For further proof of this, google "Colossus." Its a software program that insurance companies use to try to figure out what claims are worth. But, again, it doesnt work. By googling "Colossus" you will come up with hundreds of websites where people tell you that there is no formula for figuring out what your case is worth.
In my opinion, you should save your money and not buy a book. If you want to know what your case is worth, talk to an attorney or two. But there is no magic formula for determining what your case is worth.