When my printer's type began to go faint, I called a repair shop where a friendly man told me that the printer probably needed only to be cleaned.
Because the shop charged 50 pounds for such cleanings, he told me, it would be better for me to read the printer's directions and try the job myself.
Pleasantly surprised by his words, I asked, "Does your boss know that you discourage business?"
"Actually it's my boss's idea," the employee replied. "We usually make more money on repairs if we let people try to repair things themselves first."