Rivers Stores - 3 Days Only - Socks $1 Pair
Limted stock and sizes, and excludes black, charcoal and navy.
Catalogue (#10 on the link) says as of July 2nd they had a certain amount of this stock but also says On Sale next 3 days only (and we got this in our letter box yesterday or today).
Also says offer ends 9pm 23/07/08 and prices go back up to normal on the 24/07/08, so not sure exact starting date. Your guess is as good as mine.
Here is the direct link to the Catalog.