These fridge / incubators do work really well. We have tested ours for the last 6 months now, and have hatched out a few clutches of different reptiles. The one thing to keep in mind - the one we carry at LLL is 20% larger than the one on thinkgeek. People often think they are the same one. Ours is 25 liter capacity, and the one on think is 20. We also sell extra shelves for our unit as well to offer more places to stack egg containers. Just some shameless self promotion since ours is not much more than this, but you do get a few extra features, and extra space too!
LLLReptile Pro MR-148 Incubator
Either way, they work well, so enjoy, and good luck incubating!
Scott
LLLReptile & Supply
www.LLLReptile.com