I've just bought one of these
Lowepro Computrekker II for £54 delivered.
Arrived quite quickly, bag is badged as a Lowepro, has the Lowepro zippers and looks identical to the bags at Focus On Imaging, even came in the Lowepro cellephane wrapping. Not sure if its legit, but at nearly 1/2 the Warehouse Express price you can't complain.