Hello, I'm keen to purchase a new Celestron C8S-GT (XLT) 8" go-to scope, and I note a HUGE price difference between Australian dealers and those in the USA? Any ideas why? If you take into account exchange rate, shipping and mark-up, the price still seems unreasonable. I'm thinking of purchasing this scope through a US vendor, and shipping it. I believe I'm saving over $1500AUS on the deal by buying internationally. Any ideas why there is a such a huge dollar difference? Warranty? Service? If it breaks, I'm assuming the $1500 differential would cover most reasonable repairs? Any comments?