Optiarc AD-7543A international purchase

I have done some research and decided that I have got my mind set on replacing my Mat’shit’a UJ-850s with the Optiarc AD-7543a because of region unlocking problems. I have searched this site with no avail and I have googled everywhere and visited many international sites and most either don’t send to Australia or the few that do are way too expensive for shipping (more than the cost of the drive). Auction sites don’t even offer this drive to Australia. Can anyone provide me with a reliable shop to buy this drive from at a cost of preferrably under AU $130 / EU 82 / US $117 ?? If someone believes this drive won’t be compatible with a drive swap in my Asus F3JP, it would be great if you could advise me before I leap in and buy. Thanks in advance