The companies do not reveal their fixtures very often, in fact we can only do estimations right now on a few Vocaloids.
- We know Kaito was a failure selling just 500 units in his first year.
- We know all other Vocaloid were a success and sold 1,000+ units since Kaito was the only failure.
- Meiko we are told sold 3,000 units in her first year.
- Miku sold 40,000+ units in her first year and had sold 60,000+ by 2011.
This is the only information we were told.