Thanks for the reply, I understand the de-icing procedures Type I for de-ice and Type IV for anti-ice and what we did by applying Type I to clean the aircraft and Type IV to depart was exactly what we should have done. We probably didn't need the Type IV as we departed about 5 minutes after the cleaning and the snow had almost subsided. The application of the Type IV was purely better safe than sorry. My question was simply how much should it cost as I was quite surprised with the $7500.00 tab never have experiencing a de-icing before, that's it. What some implied about being the DO or a Lear Pilot and never de-icing before is beyond me, I don't understand what that has to do with anything, I've been flying over 40 years and yes I still learn something almost daily. I guess I can only aspire to know as much as them and be as perfect as them. I truly do appreciate the replies from all that took the time to answer my original question, as for the unwanted opinions from the know it all meatheads, they can take a hike.