Beware of cheap bamboo flutes. 100$ is probably not enough for a decent flute, but this varies with the size. Lower tone, mellow sounding bansuris are more expensive and you need larger hands and fingers to play them.
There is a lot of work involved and they should be made by a good artisan who spends a lot of time on each instrument, starting from the selection of the bamboo up to final tuning.
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