Is the old-clothes/second-hand goods seller stereotype technically unfavourable, though ? I know that most caricatures of travelling pedlars from the 19th century gave them strong accents and broken English, using immigrant/working class/religious status to make fun of them and implying that they were cheaters... that could be the unfavourable part.. because it was seen as a low occupation. I'm reminded of a scene in "Anne of Green Gables" where Anne Shirley says that she bought some hair dye off a Russian immigrant pedlar, and the hair dye turns her hair green (she wanted to dye it black), so the implication would be that the pedlar cheated her by selling cheap hair dye.. that's unfavourable I guess.