I am really interested in these machines, but the state of the art with desktop CNC and especially additive processes like 3D printing is moving lightning fast. Anything you buy now will no longer be state of the art a year from now, or even playing in the same league.
I stopped into Best Buy a month ago to see a 3D printer for sale, with intricate samples of delicate plastic on display as well. I think those cost <$1000, and the price of the printer and materials will plummet in a matter of months. Newer stronger materials are marketed with bewildering frequency.
I am waiting for a cheap 3D printer that prints metal with a binder that can be sintered in a pottery oven. Just think - the ability to print and make a Springfield 1903, or a classic S&W revolver using files downloaded off the net with a cheap <$1000 printer, or even just thick steak like revolvers like the GP100.