The wts frowns on jws who hawk their wares at the kh.
But there is this group that travel to different parts of the country and stay in a hotel Holiday Inn or of the likes. Then they show up at the hall and let it be known that they are gold buyers. So the members are told to come by the hotel and sell their old or broken (ex. broken chains) jewelry they no longer want. The uneducated jw thinks since their broken ring or chain is of little value. These rf members are ripe for the picking. Once they have the cash in their hands they tell all their other jw freinds and word spreads where to go for extra cash.
With gold near $1000 an ounce 14k gold is worth approx. $20 a gram. These buyers pay no where near or even half of this amount. Once the territory is worked they go home or move on in gypse form before any one becomes any the wiser.