Since you have the time, I believe you can build you own incubator and it can be every bit as good as a quality purchased incubator. I am not extremely mechanical and yet I was able to use the information from this forum to build my own and just hatched our first clutch this week. It will hold probably 6 to 8 clutches. The fluctuation in temperature was less than 1 degree during the entire 57 days that it took for them to all leave the eggs. I used a high end "Uline" wine cooler that someone was selling on CL for $50. I bought it for $30. It has a great seal and holds temps and humidity extremely well and even has an interior light that comes on when the door is opened. I used an AC fan with a reostat for speed control, that I purchased from Amazon. It is the type used for cooling electronic componants such as home theater systems, refridgerators, and etc.. It has a life expectancy of about 60,000 hours of continuous use. I purchased 11" flexwatt, a plug cord, and a roll of aluminum foil tape from Reptile Basics. The entire incubator cost less than $100, not including a thermostat and is made from quality componants. The enclosure and thermostat are the two most important items for maintaining stable temps and humidity. Take your time and find something good for the enclosure and buy a quality thermostat.
Here is a picture of the finished item. I dont think it looks too much like Bubba built it. However, I know that if you are building an item for marketing, charging a premium price, and expect to move a reasonable number of units, it has to not only work well but look good.
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