I didn't read all the posts on this thread Smitty. Those incubators like the one pictured where produced into the 90's they sold for up to 169.00. I still have one on the shelf here and it works like a charm to this day. You will likely want to use a pie plate as a water dish in the bottom rather than the small bowl in the pic. They hold heat well and do not fluctuate like a Hova will unless there is a problem with the wafer. The double walled metal body provides good insulation and makes for a great internal heat sink. The larger heat element allows for use in a cooler environment. Only bad thing is you have to turn by hand. A baking soda paste will clean it up like new.
I have an instruction set for it here if you need a copy.