1. "Nokia continued to lead the mobile phone market, but its share dropped to 36.2 per cent from 39.1 per cent in the first quarter of 2008 (see Table 1). ..

"Symbian accounted for 49.3 per cent of worldwide smartphone operating systems (OS) market share in the first quarter of 2009, down from 56.9 per cent share in the first quarter of 2008. RIM’s smartphone OS market share reached 19.9 per cent in the first quarter of 2009, up from 13.3 per cent share in the first quarter of last year. The iPhone OS accounted for 10.8 per cent of the market, up from 5.3 per cent market share in the first quarter of 2008."

"Vendor Performance
Nokia’s worldwide sales reached 97.4 million units in the first quarter of 2009, thanks to reductions in inventory in markets such as Asia/Pacific and Latin America. This was the first time Nokia’s sales dipped below 100 million units since the first quarter of 2007."

source: http://www.gartner.com/it/page.jsp?id=985912

2). Without contract, the iPhone 3G is $499 from the Apple Store (confirmed).
I think the Palm Pre is $549, I'm not 100% sure on this one.