I had to pay an additional $395.00 because my insurance was told modifications had to be made that weren't covered. $100.00 for a temperature relief valve, the valve came with the hot water heater, what I ended up paying for was 3 feet of PVC pipe. $140.00 for hot side piping, 2 feet of PVC pipe and a PVC elbow joint. 155.00 for cold piping, 2 feet of PVC pipe, a PVC elbow and a cheap PVC shut off valve. The only modification from the original was that the new tank is a little taller and the PVC needed to be shorter. I was also told I could not make the appointment unless I paid up front. I was lead to believe that this would be a big job... It took less than a half of an hour from beginning to end. The technician could not have been nicer, the one good thing. He was very sympathetic and understood my frustration.