Credit to wahyd4's deal on the i7/512GB model.
Go big or go home! If you're going to spend this much on a MacBook, you may as well go i9 and 1TB ;-)
Until Officeworks updates their pricing (not updated as of posting), you can price beat down to $3761.05 (I have confirmed the match on the phone with Officeworks).
Original Apple RRP $4399
Wish they'd have higher memory options for pre-built. A lot more useful than a higher end CPU for most use cases.