Despite a number of recent unsourced stories to the contrary, we unfortunately still don't have a firm sales date for the ASUS Transformer Prime. We do, however have a ballpark window -- ASUS has told us to "expect availabilty in North America to start the week of 12/19 based on pre-order fulfillments and inbound shipment schedules." Online availability may hit a week sooner, around Dec. 12.
So, expect updates over the next couple weeks, we reckon. Pricing is still listed at $499 for the 32GB version of the Transformer Prime, and the 64GB version's going for $599.