My incubator that I used this year was an ugly foam box that something was shipped in at some point. I only need to hold one or two clutches so it worked great. I had 2 ft of 4 inch flexwatt and a Helix Tstat. I put 2 small square tubs under the egg box to keep it off of the floor. That was it. I set the Helix and checked occassionally and had no fluxuations at all once it was a good temp. It cost me $1.00 total (egg tub)as I already had the Helix and flexwatt. I only listed this to let you know that it doesn't have to be fancy, especially if you only have 1 or 2 clutches.