I understand the caution being expressed here, but on these lines it seems to me that no-one would get to buy early an TV with mains EHT (for example), as the safest thing for the estwhile seller to do would be to crush it. That seems a shame, to me. Perhaps a sale on this forum or similar might assuage your fears that someone might hurt themselves through ignorance or foolishness. I'll not express an interest, and you'll be even safer
