[Dove]

Amazon has them, and cheaper than I've ever seen in a drug store. In fact, you can even set up a subscription service, though I don't remember how.

[lotharbot]

There's a "subscribe and save" link next to the "add to cart" link on some of the product pages, as well as a "subscribe and save" link on the navigation bar from the Health & Personal Care section. It's pretty straightforward from there.