The Cabin just keeps evolving with something totally new each year being added to it. It's also turned out to be a great hobby where I normally work from a desk at home, this gets you out there and is obviously far more physical. It's now slowly evolving into a face-to-face studio for HD conferencing over the Internet, certainly beats sitting in traffic for several hours at a time trying to visit clients in person.
The actual cabin itself, isn't that expensive to build, but anyone building one of these will find themselves constantly lavishing it with gifts and more add-ons.