I have been buying my refrigerator filters from Filters Fast for quite a few years and have always been quite satisfied... however, the last few years, i've been disappointed. I used to receive reminder emails when my 6 month window for replacement was approaching, but not the last few times. Also, for the last 3 times I've ordered the exact same product, the price has increased approximately $10 each time! That's a huge increase. I have always appreciated the convenience, but I'm not sure if it's worth it any more.