Some recent social game design auctions on eBay:

Mobile & Social Game Design: Monetization Methods and Mechanics by Tim Fields (E

$72.03
End Date: Saturday Feb-10-2018 16:18:03 PST
Buy It Now for only: $72.03
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Mobile and Social Game Design : Monetization Methods and Mechanics, Second...
$49.95
End Date: Thursday Jan-25-2018 9:43:29 PST
Buy It Now for only: $49.95
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Mobile & Social Game Design
$42.68
End Date: Sunday Feb-11-2018 16:26:27 PST
Buy It Now for only: $42.68
Buy It Now | Add to watch list