Around $30 shipped if you go wiikey route with triwing. Don't really bother with the solder kit. There's plenty of places to find thin gauge wire. And add another $7 for a 15w iron, and a few bucks for solder and flux. Then, if you muck up and need to use desoldering braid (I can't see how you would need it though if you follow directions) and a pump.
But all in all, I can't see it being more than the price of a game or two if you want to look at it that way.