Hi, I bought one from:
http://www.onyxboox.com/
I paid US$374 when the dollar was over 90 cents - it included a cover and a 2gig sd card. Since the dollars dive it may not be worth it.
I am quite happy with the device. I have an assortment of pdf and text files but obtaining ebooks is a bit more tricky. Amazon seems to be tied to their Kindle. Barnes and Noble will not sell all their content to non US customers. Local ebook sellers seem to want to charge more than they do for a paperback version and double the US prices. It is possible to circumvent the US only restrictions through devious means though.
A real find is the free program Calibre. It has a great news download feature downloading daily papers from hundreds of sites - includes 5 Aussie sites.
HTH
Chris