**Tom, it probably means each image is 15$$ per hour, so if it takes 4 hours that's 60 dollars. I've done several repairs for family too, and it is horribly time consuming, and like mentioned, most people wouldn't pay for the actual time involved in this thankless task. But the ones I've done for family, they were delighted, even though they didn't have a clue how long it took...
It would be a great business if you had apprecative customers, who could afford the labor...  **