User blog comment:OH&S/Q4 2014 for the Index franchise/@comment-112.198.79.74-20141005131713/@comment-76.185.72.155-20141005191243

Index I sold about 12.5k average.

Index II sold about 17k average which is tied with Railgn S.

Railgun sold 24k average.

Index Movie sold 45k. Made 500 million yen while it was in theaters.

Yep, people still love their Raildex, and DB can make a profit off of it withouth having to rely on LN sales.