Who knows the real reason..... But the ideas/suggestions proposed so far do not seem unique to this item - they could apply to many adverts that get far fewer viewings.
There have been several St Kilda weights for sale on eBay in the last few months (and if your searches were efficient you would have found them), but none got the degree of interest that this achieved. Maybe just chance....
But it always helps to use a good search: '
paperweight' returns 2255 items as I type - try it and see what you get. But my own tailored search for paperweight returns 3429 at the same time - over 50% more. So how many people are missing these other items........probably most. As they say, "Life's a bitch, then you die." Or my version: "Life's a beach, then you dive!"
Tee hee! Sorry - I like underwater stuff....
Regards
Alan