Stumbled on this by chance after I saw this bag at Sydney Airport. Posting on the airplane before takeoff =D Excellent price on this popular luggage. Note this is the 50cm 2-wheel bag and not the 55cm. Still a great bag at only 1.5kg.
I got a pop up from luggage online to sign up for their newsletter for an additional 10% discount. This brings the price down to a sweet $78.30 - I believe a historic low.
edit: Looks like they're really trying to clear stock this time. LuggageOnline has further lowered price to $83 (from $87) so taking an extra 10% with the code brings the final cost to only $75!