Product review (5 stars): Best price around same quality
Best price anywhere. Same filters sold individually just bulk packed with no box. If you run your unit a lot as I do you will need to change filters regularly. Never turn it off and leave a wet filter in it will grow mold fast with no air movement. Last time I turned mine off it didn't want to start again. I left it on for a couple hours and it finally kicked in. Now I just leave it on even during refill and filter replacement.  It's been running that way for over a year now.