It was worth it for the peace of mind. You would have had 5-6 years to ponder if you should have tried the $40 fix.
When mine died i spent a week fiddling with it. I casually told the CFO that I was almost certain it was done and was going to give it one last chance. She had become such a fan of the 'salt pool' she demanded to know why i hadn't replaced it yet. Well, thanks sweetie. Your approval of funds is touching. But *I'm* not ready to let it go yet.
That we can do. No Hail Mary's. Just good old fashioned collective knowledge and science. Easy peasy.