Well, older bags are more likely to be Box calf. New bags in Box are actually quite a bit more expensive than, say, Togo, and are rare.
Box is not for everyone. It is a heritage leather. This thread and Ode to Box Calf will tell you a lot.
But I'd say the high-end resale marketed is dominated by buyers who want less of a collector bag and more of a "normal" bag (no disrespect intended) and don't want to play boutique games.
Thanks so much Quelle