Some recent design social games auctions on eBay:

Social Game Design: Monetization Methods and Mechanics

$8.99
End Date: Friday Aug-11-2017 14:08:38 PDT
Buy It Now for only: $8.99
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Social Game Design: Monetization Methods and Mechanics-ExLibrary
$6.99
End Date: Friday Aug-4-2017 13:28:28 PDT
Buy It Now for only: $6.99
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Mobile & Social Game Design: Monetization Methods and Mechanics by Tim Fields Pa
$68.80
End Date: Monday Aug-14-2017 17:18:03 PDT
Buy It Now for only: $68.80
Buy It Now | Add to watch list