The December 2004/January 2005 issue of Business Integration Journal had an article by John Schmidt called What the &%$! Are Ontologies? in which Schmidt says, "If your consultant starts talking about semantics, metadata, cononicals [sic] and ontologies, expect to pay an extra $100 per hour."
And at the conclusion of the Protégé Short Course, the organizers passed out a menu of service offerings which included consulting on ontology development at $500 per hour. (via Semantic Arts)
