will cost you about 40 bucks for the thermostat and heating element, the rest is up to you on your build. I'm doing the same thing with a mini fridge I got off craigslist and will make a how to for it. will be removing all the "unneeded crap" this weekend, then it's wait for the thermostat and element to arrive before completing. I will also try to put in some racks but we'll see how that goes.