If you need any type of water filters, especially refrigerator water filters, I suggest stocking up on quite a few at once. Why? Well if you stock up you can take advantage of the $1.99 shipping on orders of $75 or more that filtersfast.com is offering. They don't just carry water filters though. They carry air filters for stuff like ac's and furnaces, too. You can buy all the filters you need for your house all at once and save big on shipping or stock up on multiples so you're never without one when you need to change a filter!