Harry Potter Robe, Deluxe Wizarding World Hogwarts House Themed Robes for Adults, Movie Quality Dress Up Costume Accessory Adult M (38-40) Slytherin is up for auction in Clothing, Shoes & Jewelry. The current bid is $2.50, 93% below the $38.00 MSRP, in New/Like New condition. This auction has ended — similar items appear in live auctions regularly.