The Helmet of Arben, like most non-set unique armor in the Divinity II: Flames of Vengeance expansion, is available for purchase by anyone with enough coin. Formally used by Lord Arben, the helmet is available from Gofannon, the armorer and merchant located south of the Ministry in the Great Market district of Aleroth.

Cost: 55910 gold
Discounted Cost (mindread Gofannon): 41932 gold