A roofer was called out to fix a leak on a large home. He grabbed his caulk gun and tools and proceeded up the ladder. Amidst a maze of skylights and vent pipes plus a wall and two chimneys, the roofer went to work.
A few minutes later he came back down the ladder, and met a puzzled-looking homeowner. The roofer wrote an invoice for $375.00 and handed it to the customer.
“Three hundred and seventy five dollars!!?” the customer cried out. “It took you all of 30 minutes from the time you arrived!”
“Yes,” the roofer explained. “I had to open a tube of caulk. It’s $75 for the caulk and application, and $300.00 for knowing where to apply it.”