Dawn Simulator Alarm Clocks

So I have been incredibly over-tired and over-worked lately and what shows up in my email but an article on how we all need more sleep from GOOP
The most interesting thing I saw in it were these Dawn Simulator Alarm Clocks where it gradually gets brighter and brighter in your room. I think I may need one when I have an extra $70 lying around . . . I have no problem getting to sleep, but I hate waking up in the dark all winter (I usually get up at 6am).