Well if there were less links it would probably even make a PR 5 or 6, but yeah.
Also it's actually 3 or 4 pages, but each are indexed individually and have their own PR (between 5 and 7) just because of the way the site structure is (duplicate content!), but still, yes, it would appear to be valuable.
Whether or not it's worth it to you, is another question 

I would guess you can get away with parameters in the canonical tag so decide which is the official URL and put that in the header for that paticular piece of content. Only really found this - 
