The iPad pricing starts at $499 for 16GB up to $829 for a model that does 3G. Non-3G will be shipping in 60 days. Another 30 days later the 3G models will be available. Speaking of 3g, only one carrier and that is AT&T. There is a no contract plan that gives you two options. $14.99 a month for 250mb or $29.99 for unlimited. (I’m guessing that is the current definition of unlimited which means 5GB).
There will also be a keyboard dock.