Iwatched a deicer spray 75 GALLONS onto a Beech 1900 tail about 13 years ago. I could've peed on it and gotten all the snow and ice off that was on it. At any rate, deicing fluid is WAY too expensive, just like jet fuel ($2.90 a gal in BOS when I flew in there a couple of weeks ago), but the airlines get hosed since we're a select community, need the product at a moments notice, and they'll tell us to go somewhere else if we don't like it.