Estimated value --> using other eBay sellers "buy it now" starting prices, seem to be $250 each.... Although I'm not convinced anyone has ever/actually our bought one at that price.
It would be interesting to see what one might bring on eBay, given no reserve, outrageous starting price.
Personally, I would have no special desire for one, outside of utility as a spare ball. Maybe a little extra for uniqueness, so I would say $50 to $60 would be a lot of money for one....
Scott
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