Digitimes reports that $499 and below will appear in the second half of the year. Already Toshiba is offering the second generation, but lower end HD-A2 at $399. Amazon.com has it listed for $348. Prices are coming down.
The name brand higher end XA2 are still above $600, but internal drives are difficult to find. Most come as a player. Media is $20 for a single -R and $23 for RW.