http://www.habitatsystemsltd.com/
Look here under incubators. Not cheap, but I do know of a few people that use them and they seam to work for them. I use an old upright freezer like others on here. It can hold 8 12 qt tubs. It does not hold a large number of clutches, but works great for me. I bought a Helix and the heat tape. The freezer I got for 5.00 or maybe even free. Cant remember. Build one save a bunch of money. As long as it works and gets the job done who cares what it looks like.