Very frustrating this is (and I don't mean it in an angry way), regarding Quincy, M.E. on DVD in the UK, US and Austrailia. Have up to the third season on Region 2. The third season was released by Acorn Media's UK branch around twelve months ago and nothing yet about the fourth season. Shout have released up to the sixth season, but nothing yet about when (or if) the last two seasons will get released by Shout.
All of the seasons are available for streaming on Netflix. I'm on the tail-end of S7 right now and the transfers are absolutelygorgeous!