fac3l3ssIt's high risk/high reward. Zendikar has the original enemy colored fetch lands. Granted those have been reprinted, the Zendikar ones still hold a higher price. But the risk/reward would come in getting them foil. Not to mention a few solid Mythics and Modern rares. Tbh, it's not really worth it IMO unless you literally have money to throw around.
Zandoand your point? They didn't do waves and waves like they are now and there's literally no way to differentiate first print run from any other. So the re is still a probability this box contains power.