social game design eBay auctions you should keep an eye on:

Social Game Design: Monetization Methods and Mechanics-ExLibrary

$6.99
End Date: Saturday May-6-2017 13:28:28 PDT
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Mobile & Social Game Design: Monetization Methods and Mechanics by Tim Fields Pa
$68.80
End Date: Tuesday May-16-2017 17:18:03 PDT
Buy It Now for only: $68.80
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