In a world where teleportation magic doesn’t exist, the opportunity to travel a few days journey in moments is beyond value. With only a simple toll, you can be practically on the doorstep of Nizul-tibi before you know it.
Minor Cultural Modifier: The culture believes, for the soul to leave the body, the corpse' eyes must be open. So any member of that culture takes care any dead body they find has its eyes open. Doubly true for those they kill themselves, for then the corpse will surely rise as an undead hunting him.