Some recent design social games auctions on eBay:

Mobile and Social Game Design : Monetization Methods and Mechanics, Second...

$41.81
End Date: Friday Oct-27-2017 10:43:29 PDT
Buy It Now for only: $41.81
Buy It Now | Add to watch list

Mobile & Social Game Design: Monetization Methods and Mechanics (Paperback or So
$61.34
End Date: Monday Nov-6-2017 10:43:17 PST
Buy It Now for only: $61.34
Buy It Now | Add to watch list

Mobile & Social Game Design: Monetization Methods and Mechanics by Tim Fields Pa
$68.80
End Date: Sunday Nov-12-2017 16:18:03 PST
Buy It Now for only: $68.80
Buy It Now | Add to watch list

Social Game Design : Monetization Methods and Mechanics
$11.39
End Date: Tuesday Nov-7-2017 9:27:47 PST
Buy It Now for only: $11.39
Buy It Now | Add to watch list