1 set includes 3 pieces. If you use additional replacement pieces (eg need an additional piece of mylar), please pay for another set to cover costs. Thanks!Material Location: The StoreUnit Cost: $0.15Unit: 1 setEquipment: Button Maker 1 Inch Supplier Source Information These are the suppliers that MakeHaven purchases these items from. Material Source: TRY SOURCE if sizing rightBack up more expensive option