It's the old case-history-to-fill-out-the-pages routine again. This time, to get us to strike out on our own in the job market, if the spirit (and our wretchedly dull existence) moves us. Case studies of bankers who decide to become financial consultants and wind up on the lecture circuit aren't much in the way of encouragement. And Rosefsky offers little more in the way of real advice: if you're out to buy a business, order a Dun & Bradstreet on it. Determining the actual cost of a business depends on what you have to pay, what the market will bear, how badly the owner needs to sell, and how much you want it. No kidding.