I'd say your first mistake was not sitting at home and letting someone else you trust handle the errand boy duties. Second, why would you personally carry 3 1/2 oz's of weight into an unknown situation with characters you don't know. Even if your buddy says he knows these guys you have no way of knowing how well. My first thought wouldn't be that these guys are going to rob me it would be that these guys are going to arrest me. Always have a buffer between you and those that want to buy what you have.