Some recent social game developer auctions on eBay:

Hoot Owl Hoot Cooperative Board Game Matching Kids Toy Social Development Skills

$19.87
End Date: Tuesday Jul-4-2017 22:50:47 PDT
Buy It Now for only: $19.87
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Game Plan for Social Media Lead Generation : How to Develop a Business Strate...
$20.08
End Date: Saturday Jul-8-2017 19:00:38 PDT
Buy It Now for only: $20.08
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Social Development Skills Board Game Kids Children Fun Learn Play Activity Gift
$23.53
End Date: Thursday Jul-20-2017 13:00:07 PDT
Buy It Now for only: $23.53
Buy It Now | Add to watch list