If you have an electric stove, 220V, then yes, it would be relatively easy and not terribly expensive to wire an outlet off the stove's outlet, but you would not be able to use both at the same time, and there may be some code I don't know about that would prevent an electrician from begin able to wire it this way.
Also, Wynne-R has a point: Our current is actually closer to 240V than 220V, even though a lot of people call it "220". I don't think it's a big deal, but coming from Korea, you gotta wonder how much overhead is designed into that thing.
For the cost, I'd consider doing this as an experiment. A lot of people want or need an electric system for their house or apartment, and this might be a nice way of accommodating some of them. But you really need to figure out a ground for it, and of course there is the whole needing to wire an outlet for 220V thing.
EDIT: Forgot to say that our current is approximate, and that 120V is going to be slightly less, due to line loss and everything has a certain tolerance it will work within. So I am guessing that they 240V device will work just fine on a 234V (approximation) current coming from a stove outlet.