I got mine on sale from Kemp's Koop for $225 plus $40 shipping (yeah, they're high on shipping). I have eggs due to hatch on April 10 and so far 11 out of 11 are good!!
Holding rock steady temps and humidity. I also love that I don't have to take them out to candle. I fixed up my flashlight with a small toilet paper tube over the end (I had to cut it up the side and tape it over to make it smaller because I only have silkie eggs)...then turn off all the lights in the room at night, lift the cover and place the flashlight over each egg.