Product review (1 stars): Overpriced!!!
Amazon is overcharging for this product as I can purchase two 3-packs of this exact same filter (w/ free shipping) for the same price as Amazon is charging for one filter -- http://www.crucialvacuum.com/graco-1-5-gallon-humidifier-filter-3pk.html .  I'm disappointed as I have only purchased this replacement filter from Amazon in the past when it was competitively priced.  Seems like the fact that it is sold under Prime by Amazon is unfairly utilizing this subscription.