One thing I had learned while growing my business from a super small aircraft washing service into a national mobile car and truck washing franchise system is that regional variation is the key to success. Often when folks ask me for advice in the aircraft cleaning sector, car washing business, or truck wash industry I have to explain that much of my advice is specific to a given region and unless I know what region they reside I am bound to give the wrong advice, or at least less than optimal information. Okay so, let's talk because just the other day someone contacted me from a very cold climate about aircraft washing.
He noted that although my information on the topic was very helpful, he didn't feel the prices were apropos to his situation or market. You see, everything costs 3-times as much there, and it's colder that "a witch's tit" I think he noted - excuse the lingo - but this is "shop talk" and we were discussing the industry as if we were sitting in an aircraft hangar and shooting the breeze telling aircraft stories.
Indeed, I told him that; "I completely agree on the pricing issue," based on his climate. There is a big difference washing aircraft when it's freezing out, as it's more difficult to work when you have a bit of wind, cold weather, etc. you see, if you are in CA, TX or FL, you basically go out in shorts and a T-shirt, set you iced-tea on the truck and stroll through the process - hardly a care in the world really. More often than not you have to put on sun screen, and you have to keep wiping off your sun glasses.
Now then, what about the other side of the weather chart? Well, I can't imagine the pain in the ass it would be to clean military aircraft in Kuwait when the ramp temp was 135 Degrees Fahrenheit which is what my brother, a USMC C-130 pilot, told me the flight crews there had to deal with in the summer time, so of course, cleaning aircraft when the water is freezing makes for a long day too on the other side of the spectrum - and thus, your prices need to reflect that.
Remember regardless of the type of cleaning services you offer, you have to make a profit or you can't remain in business. Please consider all this and think on it.