This is the one I have.
I lucked out and found it on Ebay a few years ago for $16.00 + $16.00 shipping.
You may find a deal elsewhere, just gives you an idea of the unit.
http://www.sears.com/kenmore-humidi...p-03215420000P?prdNo=1&blockNo=1&blockType=G1
Must be the same mfg as the Essick unit - looks identical. The paper filters are a little weak, but replaceable.
Nice "steal" for $32 Hog!