I buy stuff from Northern Tool occasionally, especially if it's something of known good quality. You have to be careful with them, since (IMO) they often sell products that are cloned from durable, well-designed products, but cheapened to the point where they are junk. Their efforts sometimes give the original manufacturers of the good product a bad name, when people buy it thinking they have "the real thing", and it fails on them.
They fact that they do sell some very good stuff at good prices is what occasionally brings me back to them.