Picked up a new boxed one on eBay today (360GBP+150 shipping). I'm not too familiar with what's needed for dev and retail playback, but it comes with the SDK 1.42J. Will it at least boot retail GD's once it arrives? ;-)
It can boot GD-R and pressed GD from any region, because you can select the region with rotary switch. no cd-r booting at all...
Better use a normal Dreamcast to play retail GD's... cheaper & easier to replace once it's broken... You don't want to see this then... 432 GBP shipping & Hellgate GD included... but without GD-ROM drive... http://cgi.ebay.nl/SEGA-Dreamcast-Katana-development-station-Box-HKT-01_W0QQitemZ220506304364QQcmdZViewItemQQptZUK_VideoGames_VideoGameConsoles_VideoGameConsoles?hash=item3357332f6c
Like hl718, I'm sure that is your files on this disc. Also, it's an expensive price for a DC dev box.