I bought 3 because the price and quality is great.
927336
I just wrote a bad review about another filter and I used This one as a comparison. I think this filter is great even at twice the price.

Filter body remains small enough to tuck in to tight spots and the filter is as big as the one on my holley 650 carb on my car.
3435394
Great fit and quality - bought three more 3-packs as soon as I tried them on.
1623038
I searched other sites for this attachment, and after putting shipping and tax to the others, this was the best price I found.  I bought 3.
1424390
fabulous, perfect size, great quality, great sale price, I bought three
142529
great quality and stylish.  i bought 3 different colors because i like the style and it goes with all types of clothes.
1161939
Very surprised with the quality for the price I paid triple that for my first one and it seems about the same quality
3990187
When I first ordered these, I didn't realize I was getting three (and for a steal)! The quality is great, I'm very pleased. True to size.
607132
This is a well made bra, great quality and price. I bought 3, and just love the fit, my favorite bra for sure.
696178
Bought it for a friend as a surprise gift when it was an Add-On item for less than $8.00. Only problem is I did not buy another 2 or 3 for that great price. :-( Good quality, super soft. I wish I could catch it for that price again.
2926288
I purchased it for use with my IPad and it is doing the job well. The price for 3 was fantastic.
3772553
This is a great buy, awesome quality for an inexpensive price.
1647118
Ive like it so much that I went ahead and purchase an additional three to past out as gifts to my family and friend.
2843710
buying by the dozen really pays off on this deal. other places are asking up to $4 each for the same quality. I only needed 9 but wound up finding uses for the other 3 left. now we are putting in a second order
1008207
An amazing deal. I've been paying three times as much from a different place. The quality of these is just as good as what I had been buying. I will definitely be ordering more.
2191705
I buy 3 different and I'm really happy, the best case that you could find for this price.
3274652
I never right reviews. This product is great. For the price even if the 3 I haven't used don't work I will still be happy and rebuy.
3084846
Quality, beautiful, inexpensive. I should have bought 3 of them!