I know you said that you don't trust you DIY skills, but really they are the best incubators. They're not tough to do. An incubator is simply an insulated box with a controlled heat source. I've built 2, a small 1 from a micro fridge and a large 1 from scratch. There's a ton of build guides on this site and others, you really might want to take a look at it. If you find a micro fridge on Craigs List or another similar site, or a broken one at the dump, you can build one for under $100. You said you're going to buy a thermostat (I really like the Vivarium ones, my racks and incubators are on VE-300s), so you're buying that either way. Why not give it a try? At worst it's $100 and some of your time as a learning experience and you'll probably come out with a solid incubator. The one big thing I would say about building an incubator is to use 2 thermostats, a proportional thermostat to control it and an on/off thermostat set 2 or maybe 3 degrees higher as a safety. The thermostats are the most important part of the system, so whether you buy a manufactured one or build it yourself, don't go cheap on the thermostat. I have heard good things about incubators from Georgia Quail Farms (tell them that you are going to use it for reptiles though becuase they need to tweek it a little from using it for birds).