AT&T is to start selling Google’s flagship Android phone, the Samsung Nexus S via Best Buy stores and online, costing US$99.99 on a two-year contract. AT&T is the third US operator to offer the device. According to eWeek, Google launched its first Nexus S smartphone from T-Mobile for US$199.99 last December, while Sprint rolled out a 4G Nexus S model in May for US$199.99 before cutting the price in half to US$99.99 last week.