well i have save $100's building this instead of buying a prebuilt incubator. what i did is instead of dropping big bucks all at once. i bought the parts every month for acouple of months. then i went thrift store to find a cabinet. i spent $15 dollars on the cabinet and $20 on the insulation and now its finally complete.
My new incubator is running at 99.5 on the money and right at 50% humi! heater and thermostat came from incubator warehouse.