2873,
Most salt cells last 4 to 7 years, although we have seen them working at 10 years old. It all depends on how hard they were used, how many times they were cleaned with MA, and how often super-chlorinate was used, etc...
It would be worth increasing your salt to 4000 and seeing what happens, if that high of salt is not a taste issue for you.
If you are talking about an actual new IC40, that is a good deal.. Sometimes ads say they "replace" the IC40, but they are not actually an IC40.. Those generic units will not work if you have an automation system, like an EasyTouch..
Thanks,
Jim R.