[JSWolf]

Originally Posted by WT Sharpe

Australian
Angus Robertson
Booktopia
Borders
Dymocks
Fishpond
Google

Canada
Amazon. Make sure you are logged out. Then go to the Kindle Store. Search for a book. After the search results come up, in the upper right corner of the screen, change the country to Canada and search away.
Google
Sony eBookstore (Upper right corner switch to/from US/CA)

UK
BooksOnBoard (In the upper right corner is a way to switch to the UK store)
Amazon
Foyle's
Google
Penguin
Random House
Waterstones
WH Smith

This list is somewhat obsolete. You'll need to make sure each link actually works. Some do not. Also, Kobo needs to be added in to the list as it's the top book store in Canada and the second biggest in the US. Oh and the last thing, not all the shops listed sell eBooks.