Mercator is a merchant in the Great Market district of Aleroth during the events of Divinity II: Ego Draconis. He has run out of meat, and is annoyed with patrons that insist he must have some left. However, he does have other food and herbs for sale.
Mindreading Mercator for 1200 exp causes him to lower his prices by 25 percent and reveals: "Stupid woman! I'd give her a piece of my mind if I weren't a gentleman." Considering the low value of his goods it may not be worth the experience debt to mindread him.
Location of Mercator ("6" on map, click to enlarge):