I agree with pp and recommend Hanna Andersson's unders. I would try calling one of the outlets and see if they have any on sale. If so, you can place a phone order and they'll ship them to you. Last time I called, they were around 4.50 for one, so still pretty pricey. I got ds's a couple of years ago for $5 for a 3 pack, but they told me they don't sell 3 packs anymore at the outlets.
Also, check for coupons, I think there is a 20% off code floating around cyberspace right now.