Fujii, I think Dick is still following the same line and wouldn't be surprised if he had made this thread specifically to bring up the fact that undoubtedly both an organisation here in Australia vs one in the US would be using the same manual for Maintenance as provided by Cessna and same parts (If not then you can't compare them anyway so moot point!), but his buddy in the US gets it a lot cheaper, so why is this?
Other than higher labour rates here in Aus (Which isn't necessarily a bad thing as the Ginger Beers deserve to make a decent living as well) but perhaps all the extra crud that they're required to adhere to above and beyond the Cessna Caravan Maintenance Manual that is imposed by Bureaucrats and CASA!
Perhaps a list of the costs as quoted? I wouldn't suggest a direct copy of the quote as this to me would seem a bit rude to be disclosing but certainly typing out the costs as listed would be enlightening.