I have to replace my water heater in my unit. It is a Rheem. Capacity 55L, Electric. My plumber quoted me $1100 for Installation and removal of the old heater. Is this pretty steep? One of my friends got an 80L for about $800 I think. Oh, and I found these plumbers through recommendations from friends and continue to use them because they did a good work on a previous job at my place.