Thanks lazyeiger and a cheese for your research. Just to clarify, if you go to Amazon the pH100 will show as $83.10 - a 17% discount. Not bad but not 20%. If you put it into your cart and go to checkout though it will show a 20% discount from the already discounted price
. I just ordered 4 for $66.40 each which is a fantistic price. I'll keep 3 in inventory but let my wife give me the 4th for Christmas
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