Samsung has sold 10 million of Galaxy S phones around the world. A mind blowing number, especially since Samsung got serious about Android only a bit more then half a year ago.
Galaxy S is not the only Samsung Android handset out there. They also have cheaper Galaxy 5 and Galaxy 3 in their portfolio, available through multiple carriers around the world. Lower end Galaxies aren’t marketed as much as Galaxy S, and don’t get as much attention, but they are cheap and they are generating at least some sales.