I've been a remote worker for over four years, and my experience is this statement is partially true. With a laptop and wifi connection, I can work from any location where I am most productive. Spending every day in the same spare bedroom kills creativity, and a laptop can go anywhere that spurs it.

It saves money if you cast off things you don't need, such as an extra car (my wife and I now car share), business casual clothing, eating out, &c, and if you live somewhere cheap. I live somewhere cheap (Louisiana), so I have a house with a couple of spare bedrooms from which to work.