A heads up for any techies in Sydney,
Basement Books (near Central Station) has a whole bunch of Apress books on sale.
There were half a dozen copies of Jonathan Lewis' Cost Based Oracle for $20, plus Beginning PL/SQL and Oracle PHP (though no sign of Tom's book). It isn't just Oracle. The stock includes SQL Server, MySQL, general database, Ruby, Joomla....
Worth a trip in, but I've got no idea how long they'll stay in stock.