(OOC: He thinks the Academy might pay more, but Vanitri knows from Layna Larinas that the Academy is likely to confiscate it if he tries to sell directly to them. Still, there may be someone in the Academy who could buy it. He also suggests that some of the merchants who can afford to take such a risky chance on an expensive item might be in Orussus--it is a risky chance because he has to pay up now on the hope that somebody later buys it)
(OOC: You mean the 50 gold discount? The 50 + 50 for two IDs does add up to 100 total discount. The merchant is willing to do so. So if you do, Vanitri gains 1,800 gold and gets the necklace identified too. Is he going to do that? He could always keep it and pawn it off next time he drops by Orussus if he wants)