I’m assuming that the constant churn of purchases and returns costs them money. For example:
Some credit cards charge vendors (not consumers) a non-refundable per-transaction fee
The returned books may mess up their analytics (including royalty calculations)
Returning a book is usually a rare event, and may thus be computationally expensive
I’m assuming that the constant churn of purchases and returns costs them money. For example:
Some credit cards charge vendors (not consumers) a non-refundable per-transaction fee
The returned books may mess up their analytics (including royalty calculations)
Returning a book is usually a rare event, and may thus be computationally expensive