Solar Geysers: The next step

My family has decided to get a solar geyser. This apparently saves money - over a 3 year period time. I have my doubts though. I think we will save almost instantly! Think about it - solar technology has been around for long enough to be an efficient source of energy and build up a demand, which makes the technology readily available because of mass production lines built. It has also been around long enough to become cheaper than it first was. Also, ESKOM  (South African power) is becoming bankrupt. The electricity prices will skyrocket. We will be saving while everyone else is paying. We will also be saving the world. So why don't you try it?