I bought from the largest music store, which is dealer of Yamaha, Steinway, Sauter, Hohner, Suzuki and many prestige brands. However, the Steinway have poorer tuning than this M-37. What can you expect from this $80 toy? They even don’t know harmonica can be tuned.
Forget to tell you I am in Hong Kong. When I bought this new toy, I expected to learn a new tuning skill. Sitting hours to tune a melodica is not difficult task for me, since I am a piano tuner.