Well my spidey sense feels like a scam, why else would someone think this worth $100 if they weren't trying to take advantage of someone thinking that having the gold ball enters them into the drawing or wins something especially since the other colored balls he is selling, which have no different value, without the paperwork, than the gold ball, are listed for 500 yen.
https://www.jauce.com/user/satonishi1010
https://www.jauce.com/user/satonishi1010
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