Buys 30 year old Sony Walkman (from a known good home) in perfect & tested working condition. Demands a return as she says it is faulty, said it was a gift to a teenage kid (what teenager would want a cassette player in 2017 ??). On return unit was electronically tested and worked perfectly, except someone had tried to force the cassette door fully back and broken the hinge mechanism and cracked the plastic door. Block this buyer, if you value your stock and do not want to be left with worthless stock.