The cellar I purchased is called Silent Cellar by Dometic. They are a company out of Sweden I believe. My wife and I looked at Transtherm and Eurocave but really liked the liquid heat exchange compared to the compressor. I think it is the only one of its kind so far.
The 54 bottle (36 with racks) cellar is the smallest and least expensive of the bunch. It still runs around $1,600 pretax. the larger units are more expensive but the cost per bottle goes way down the larger you go. They have some 200+ models that look pretty big. My cellar is about 24x26x30 inches.
We figured that we don't drink too often and that wine collecting can get out of hand unless we use the cellar size to control our habit.
It also doesn't help that Napa is 1 hr away.