Chuya in Japan and buying services Rakuten and Buyee are possibilities. However It would not cost much more to buy a Yamaha P-25F (yellow) pianica, around $50 US now on Amazon.com USA. That will get you the identical mouthpiece and a sweet little compact melodica you may end up playing as much as the P-37D. Probably $25+ delivered for just the mouthpiece from Japan. P-32D is another option. The sound of all three is quite similar.