Over a 1,018,0279 iPads have been sold according to Chikita Labs.
Apple sold 500,000 iPads in its first week, so that would mean that its pace has slowed to roughly half that, or 250,000 per week in weeks two and three.
If Apple’s indeed already sold 1 million iPads in a scant three weeks, it could close out the year with around 9 million iPads sold (assuming a pace of 1M units per month) or even as many as 10 million with a big holiday surge. Not bad for a product that it was only available for three quarters of the year.
I’m not sure if the iPad’s momentum is sustainable. The iPad certainly has exceeded everyone’s expectation. Will it sell 9 million units by year end? Time will only tell.