>>8662681mandarake gets them some times...you won't pay as much as places like ebay but be prepared to pay. unfortunatly it seems they don't have any but 1 accessory set at the moment
also these figmas have one with them
i can confirm as i own all of them and non are break the bank expensive and good figures at that ... well miku is pretty old
228 Hibiki Ganaha
331 Miki Hoshii
208 Chihaya Kisaragi
EX-003 Miku Hatsune