Normally $329, on sale for $299. Book says floor will be wet for around 3 to 4 hours depending on the style of carpet and weather, but having fans on will help drying time. It doesn't suggest how often to use, but the sales guy said this model was recommended for occasional use - so maybe the whole carpet a couple of times a year and also for spot cleans if there are spills, stains, etc.

If you want more hardcore cleaning there's a big vax model that is about $499 as well. And there are cheaper models from $149 but they aren't very good apparantly. This model has the rotating brushes like a turbo head on a vaccuum.