I've found out there's a books warehouse sale from 5th Nov to 31st Dec 01 (11am to 7pm daily, even on Sundays & public holidays). It's at Blk 2 Pasir Panjang Road, #06-26, Alexandra Distripark (PSA warehouse). Check it out if you've got time. I don't know what sort of deals or books are available though. :)