No way the math works out to save me money versus daily checking and using LC. The initial cost of the SWCG would buy me 10 years of chlorine--15 if I had had someone else install it. Plus a new cell every 5 years costs about the same as 5 years of LC, so it's NOT a cost savings in any way, shape or form.

But, I'm going to be away for a couple of weeks at a time this summer and I won't always have someone to add half a gallon of LC every two days, so this gives me a MUCH easier to maintain pool when I cannot give it daily attention.
While my water is great (FC: 12.5, pH: 7.3, T/A:70, CH: 150, CYA: 70) I still have to work out the optimal settings..otherwise it's going great!