Product review (2 stars): Each filter lasts about 3 months, likely making it cheaper to buy an OEM filter
I bought this 3 pack 9 months ago, and I have already used all three filters. They last half as long as they are supposed to. I guess if you compare them to the cost of the name brand filter, you still pay about the same amount for the same length of time the filters are good for, except with these filters you are generating three times the waste. Also, the loss of water pressure with these filters installed is significantly higher than with the name brand filter. It takes so long to fill up my cup that I actually just went to the sink instead.  I don't recommend these.