c7d017ee_Kindle___An_Eclectic_Mind__Kindle_Store
[Criteria] Sales [iBookstore] B Apple sells reasonably well — unless a book has an unusual amount of appeal to Mac users, in which case, it sells best. [NOOK Store] D B&N’s sales are sluggish and rather disappointing. [Kindle Store] 
A In most instances, Amazon sells the most books.
Kindle | An Eclectic Mind