Grandpa turns on the time machine telling you how in his dinosaur days the pre-sell system of yesteryear never went out of style as being a useful way of finding the value of your photography from the only people who really matter, YOUR CUSTOMERS. The pre-sell lets the customer qualify themselves by making a small purchase leaving the main purchase to being after the pictures are taken and viewed. Grandpa does this all in one stop, photo session, selling and getting payment. He lays out the concept of shooting poses with selling in mind so your images fit together like a puzzle opening up the opportunity for big portraits and montages to be sold. And remember that when you show the images right after the shoot, both parents are usually there so money decisions and payments are easily made. He does mention a $300 average so it is good to get excited for getting 10 sittings that can generate $3000.00 is what many are trying to do.