Product review (1 stars): Be careful - this is only 2 filters, not 2 packs of 2 filters
This listing is confusing because the "4" is right at the end, which one could mistake (as I did) to be a quantity of 4 filters. It's NOT, it's just 2 filters - not 2 packs of 2 filters, as I has thought I was purchasing.

These filters should cost $40 each MAX, and you can probably get them for less. Even direct from the manufacturer, with shipping, can be gotten for less.