I know a lot of people like to get these Pokemon games when they popup on Best Buy, Diamonds available right now for shipping and store pickup.
http://www.bestbuy.com/site/Pok%25C3%25A9mon+Diamond+%25C2%2597+PRE-OWNED+-+Nintendo+DS/1480741.p?skuId=1480741&productCategoryId=pcmcat232900050017&id=1218262490780
http://www.bestbuy.com/site/Pok%25C3%25A9mon+Diamond+%25C2%2597+PRE-OWNED+-+Nintendo+DS/1480741.p?skuId=1480741&productCategoryId=pcmcat232900050017&id=1218262490780