The Jplus Romance Limited (Korean) version will be released on 31 August 2011, and retails on this website at 11,980 yen (additional delivery charges may apply). The behind-the-scenes DVD comes with English and Chinese subtitles.
(Some DVD players may support the playing of Region 2/3 DVD. Please check with your local retailer/technician.
Anyway, if your DVD player cannot play it, you can watch it on your PC with VLC Media Player without changing the region code of your PC).