Kate Middleton’s Superga sneakers are on sale up to 72% off at Amazon's Big Winter Sale event! Shop Amazon's Big Winter Sale for huge deals on a head start on your spring and summer fashion!The Duchess of Cambridge’s go-to casual Superga shoes are now starting at $19 with many sizes and styles around the $40-$50 price point on Amazon right now. The royal has worn the canvas sneaker lace-ups multiple times throughout her years as duchess for appearances where she dressed down.