A pound of frankincense cost a Roman laborer’s monthly salary.

Evidence

A pound of frankincense cost the equivalent of a Roman labourer’s salary for a month, and a pound of myrrh twice as much. — Neil MacGregor, A History of the World in 100 Objects, 712

Categorization

• corroborated: 2 independent passages support this claim — Neil MacGregor, A History of the World in 100 Objects, 712