Producing botulinum toxin costs four hundred and twenty dollars per pound.

Evidence

Botulinum toxin, being highly concentrated, was the most expensive weapon: it cost four hundred and twenty dollars per pound to make. — Nicholson Baker, Baseless- My Search for Secrets in the…, 509

Categorization

• SEED: This passage highlights the financial aspects of producing various biological weapons, which could be an angle for articles on military expenditures.
• corroborated: 3 independent passages support this claim — Nicholson Baker, Baseless- My Search for Secrets in the…, 509