I was looking to purchase textbooks for my son and comparing the prices from the school book list with what I could get online and stumbled across this deal from Zookal.
Sign up to a 14 day trials of Homework Help and they give you 20% of all books that you purchase plus free delivery. With textbooks being so expensive; this 20% off made it cheaper than book depository, amazon and the others I found through booko. I myself have saved heaps; hope others can benefit as well.
Do remember to cancel the subscription before the 14 days.
Timely deal! I have cancelled the subscription immediately after I subscribed to it.