Is your service company Otis, or do you have someone else? If they're trying to get you to do all 5, it doesn't sound like it'll matter what product they're going to use they're going to mark it up the same. Either way you'll have to upgrade those at400 sooner or later because they stopped producing parts for them. Like right now if you lose a motor/gearbox on a right hand operator you can't get a replacement from Unitec. Also depending on what part of the country you're in will determine the price of things but our "brake even" price for an at400 to glide upgrade is roughly 12-14k. That's not including Mark up or profit.
