You don't get much reliable benchmark stats from retailers in Australia. As a reference point, I thought I could share this table, containing my preferred benchmark statistic, with you.
The next post (not written yet) will go some way to explaining why it is important to pick the right number. (Just scroll up if you are reading this in a few days from today - or if this is the most current post, just wait a few days :-))
UPDATE: HERE IS THE LINK
McGraw-Hill/Irwin Retailing Management, 7th ed, 2008