Amazon is running this item at $3.99 for three bags.  In addition, it's a four for three item, meaning that if you purchase four of these, you get 12 bags for the cost of three, or $11.97, making the net price about $1 per bag.  Because it's a super saver item, you need to purchase at least $25 in your total order to qualify for free shipping. This seemed like a good deal to me, considering I got the vacuum free from my mother-in-law, but that's another story.