Prices go up and down. We buy them monthly because the price was great. On the last set, one of the filters in the center hole broke and we had no water pressure. We buy them regularly and only one filter broke and they work great. I gave it 3 stars because the price went up and down and a filter broke. I'll buy when they're $9 but not when they go up to $16. Prices have been doing this for over six months now.
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