I went the cheaper route and built my own incubator using an old mini fridge. I say it was cheaper because I had already invested in a Herpstat 2 for other reptile stuff and already had a heat mat. What I ended up doing was gutting the fridge. Taped a heat mat on the bottom and back of the inside of the fridge. Bought a small computer fan and attached it to the top of the fridge to help circulate air and blow the warm air back down. I also stacked water bottles on the bottom of the fridge to create a thermal mass to help maintain the set temp of the inside if the door is opened. I just put the probe from the herpstat 2 inside on one of the shelves, plugged the heat mat into the herpstat 2, and set the temp. I had amazing success with it last season and plan to use it for years to come. It is quite an efficient setup as well because of how the herpstat works. I will take pictures and post them in here.