We don't recommend borax online because it's almost always available more cheaply locally. Walmart and many other stores carry it in the detergent section.

But if you know of a source that sells it DELIVERED for under $1 / lb, please post it. We have some users who live in the sticks, and it's cheaper to pay $1/lb for borax than it is to drive 60 miles 1-way to Walmart.