It's a ThinkGeek.com mini fridge/warmer that's been doctored up for use as a reptile incubator--which process apparently caused the price to be doctored up to 150 bucks more than the fridge/warmer.

I wouldn't have any issue with this at all if they were selling it for the same price, but at least change the case a little bit if you're going to slap a new label on an existing product and re-purpose it--and don't insult our intelligence by doubling the price just for putting the buttons in a slightly different place, and slapping a logo on it.

The mini-fridges reportedly hold temperatures great, by the way.
http://www.thinkgeek.com/homeoffice/gear/6ad2/

It is small. It will probably hold 2 or 3 ball clutches.