Sailor PenBrand · Paper goodsShikiori Fountain Pen Cartridges$6 – $8Stocked at 3SunSnow: Paper & GoodsSt. Louis, MORetailer · Stationery shop$8Papillon PressWebster Groves, MORetailer · Stationery shop$8The Analog StationerBrooklyn, NYRetailer · Stationery shop$6