Product review (1 stars): Old version at the new version price:(
They are selling the pre Sept. 2013 version, MWF3PK, which used to sell for ~$90 for the higher price of the MWFP3PK, which now filters pharmaceuticals.  If you buy this product you are gifting the seller $40, the price of a single filter.  Always do your research.  Vendors make money in very unscrupulous ways.