Some recent design social games auctions on eBay:

Mobile & Social Game Design : Monetization Methods and Mechanics, Paperback b...

$51.98
End Date: Thursday May-3-2018 18:43:49 PDT
Buy It Now for only: $51.98
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Mobile & Social Game Design: Monetization Methods and Mechanics (Paperback or So
$63.20
End Date: Saturday May-5-2018 11:43:17 PDT
Buy It Now for only: $63.20
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Mobile & Social Game Design: Monetization Methods and Mechanics: Monetization Me
$63.19
End Date: Friday May-11-2018 17:18:03 PDT
Buy It Now for only: $63.19
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Mobile and Social Game Design : Monetization Methods and Mechanics, Second...
$43.74
End Date: Wednesday Apr-25-2018 10:43:29 PDT
Buy It Now for only: $43.74
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