Some recent design social games auctions on eBay:

Mobile & Social Game Design: Monetization Methods and Mechanics, Second Edition

$11.97
End Date: Wednesday Oct-4-2017 13:17:31 PDT
Buy It Now for only: $11.97
Buy It Now | Add to watch list

Mobile & Social Game Design: Monetization Methods and Mechanics (Paperback or So
$61.65
End Date: Saturday Oct-7-2017 11:43:17 PDT
Buy It Now for only: $61.65
Buy It Now | Add to watch list

Mobile & Social Game Design: Monetization Methods and Mechanics by Tim Fields Pa
$68.80
End Date: Friday Oct-13-2017 17:18:03 PDT
Buy It Now for only: $68.80
Buy It Now | Add to watch list