DVD/VideoUpdated: October 5th, 2006
Play.com and Powerplaydirect
Are the cheapest places I found online.
Soccerondvd
Has a bigger catalogue but is about 20-30% dearer on most items.
Amazon
Type ‘manchester city’ into the search engine in the video section and you’ll find 37 listed, available new and used. MCIVTA has reviews for some of them.