It's common to hear the following recorded announcement blared from pickup trucks in Mexico City. The trucks provide the important service of purchasing your old junk and hauling it away.
...Se compran, colchones, tapones, refrigeradores, estufas, lavadoras, microondas o algo de fierro viejo que venda....Se compran, colchones, tapones, refrigeradores, estufas, lavadoras, microondas o algo de fierro viejo que venda...
Translation: "We buy mattresses, stoppers, refrigerators, stoves, washing machines, microwaves, or any old iron you want to sell."
