Do the amazon knock off cattle prods hurt more or less than genuine ones? Like, do they just not work? Are they just bricks in boxes? Or do they instantly cause

Do the amazon knock off cattle prods hurt more or less than genuine ones? Like, do they just not work? Are they just bricks in boxes? Or do they instantly cause death? I’m joking, but I go through this logic each time I regrettably make an amazon purchase: what’s the knock-off failure mode. Vitamins? Heavy metal poisoning. No go. Pens? They don’t write well. Acceptable for amazon purchase.