I seriously doubt it will cost $1K. Those prices were taken from Expansys (which sells the iPad entry level for $820US -- converted), a suspected O2 subsidy and plan over a two-year contract, and some other weak extrapolations.

I think it's best to wait for the official numbers. If nothing else, Samsung is very smart, and will likely price the device to be competitive with the iPad, which is around the $599 mark. Recall, the Galaxy S can be had for $599(source:amazon), which is the same as the entry-level iPhone 4 (source:apple). It was also available for $499 close to launch (iirc).