90% of the items on my kids school list (at http://www.schoolstuff.com.au/booklists/) are cheaper than Officeworks, so by taking this to Officeworks (you can also upload online) that will beat the cheaper prices by 20%
You could also compare the prices on any other list to these and take to best to Officeworks to price match. Just select a school and year to get a list from Schoolstuff. Other suppliers might be even cheaper?
The only thinkg they often don't stock are the maths and english books so you may still need to get these from the school supplier.
Anyone know a rich school that lists MacBook Pros on their book list??