It turns out that getting yourself an Ubuntu Linux based Dell PC/Laptop is only $50 cheaper than the same computer with Windows installed.

That doesn’t seem like a big difference.  I would have thought at least $100-$200 dollar difference in price between the Linux PCs and Windows PCs.  However, you can run Linux quite well on slower computers so you can probably make the difference a little bigger by purchasing a slightly slower processor for the Linux computer.