It looks like Wallmart and Amazon are sold out of the L920 BLK and selling the only color available (white) now for $69.99. Att website still has the black one instock.
Nokia Lumia 920 White for AT&T - Walmart Wireless
AmazonWireless: AT&T: Cell Phones with Plans
Nokia Lumia 920 White for AT&T - Walmart Wireless
AmazonWireless: AT&T: Cell Phones with Plans