Talk:Sachiko/@comment-36026096-20181001204503/@comment-53539-20181002103553

Unknown, though she was made for a niche market so was likely expected to sell less, i.e. the super professionals, bit like Prima and Tonio were. They can be hard to use in addition for this reason and are not beginner friendly at times. Unless you know what your doing, they are just too hard to use and using them as normal like other Vocaloids results in misbehaving vocals in their case. They just don't do what you expect them to do if you just use them as normal.

She was obviously also one of the vocals really designed for the Japanese market, we don't know much about Enka music nor do we go mad for it. With vocal synth music falling on Nico Video since 2014 as well, expectations are really low from now on for all Vocaloids to do super well. So they likely weren't expecting lots of sales anyway and expectations for vocals to sell can be at times as low as 1,000 units.

These vocals don't always have to be Miku-popular for this reason, they just have to meet expectations and a lot of times they end up being one-off vocals.