While not a games site, I buy a bucket load of books here, including game guides. Free delivery world wide.
Free delivery worldwide on all books from The Book Depository
For instance: http://www.bookdepository.co.uk/Drag.../9781906064846
I think the same book was $50 or more here. $28.23AUs delivered straight my door
Bought heaps of graphic novels and RPG books cheap here as well.
Shows you cost in your currency which is handy and you can use PayPal.