Some recent social game developer auctions on eBay:

Social Development Skills Board Game Kids Children Fun Learn Play Activity Gift

$23.53
End Date: Wednesday May-16-2018 13:00:07 PDT
Buy It Now for only: $23.53
Buy It Now | Add to watch list

Feelmo "Speaking Cards" - Social & Emotional Skills Development Counseling Game
$26.47
End Date: Sunday May-6-2018 6:11:43 PDT
Buy It Now for only: $26.47
Buy It Now | Add to watch list