I agree with Ryan. I trust Elody21 to give me a quality package and I know I wouldn't get overcharged for shipping. As far as brokerage the only thing required is 1 small green sticker for the package to satisfy customs and a couple of minutes to fill it out.
i still have not turned corian.
i did get some from a friend that installs corian countertops.
he gave me 20 pieces 1/2" thick by 1" wide by 10" long to try.