X360 HD-DVD Add-on Confirmed as $200 US

...at least, according to DigiTimes.

"Microsoft will launch external HD-DVD drives for its Xbox 360 at a retail price of US$200 by Christmas of this year, and Taiwanese games developers and gaming services providers indicated this this is a smart marketing strategy as compared with Sony's adoption of built-in BD drives for its PlayStation 3 (PS3)."

That means that the price of an X360 with the HDDVD addon will be... well, actually, exactly that of the PS3's corresponding version. Hmm. Interesting.