Hi @AuLoS303,
Are you looking to buy one (some...)? You can get complete rubbish instruments very cheap, of course. But a proper Bass bansuri in E made by a master craftsman will be about 400 Euros, that sort of figure. Like wooden flutes, they are not just a bit of bamboo quickly drilled out.
There are several really good online courses for learning bansuri now also.
Like whistle players, most pro bansuri players have a roll of a complete set of pitches they take to concerts. But my favourite is the Bass in E, generally considered the prinicipal solo member of the family. You will need big hands.
High end bansuri makers are particular about forming the tone holes. Because the walls are very thin, they believe that drilling upsets the grain structure in the bamboo, so the holes are usually burned in. You can see the blackened sides. Whether this has any basis in reality or not I do not know, but it's part of the tradition.
May I refer you to this useful site?
http://www.bansuriflute.co.uk/p/where-t ... nsuri.htmlParallel to the C&F thread warning people about rubbish flutes on ebay, Amazon is flooded with cheap bansuris, also all rubbish. Be aware!
Andrew