Product name: デパートショッピング
(1) It cost 315 yen per set. (Made in 2005)▲This set is discontinued.
(2) For ages 12 and up. Those are not toys for a young child. You keep them displayed as a collection.
(3) They are not magnets. They snap in place or are just set in place.
(4) How to store them. youtu.be/Mxpwz5eAZ_8
(5) 0:00 Chopin Waltz Op.69 No.2