Water does nothing to enhance a cigar much in the same way it doesn't really add to the essence of foods, like a good wine that compliments a nice steak. Certain cigars go well with certain beverages and water is not one of the beverages. I'm no expert on choosing beverages with cigars, but there are certain cigars that match well with cognac, some that match well with a fine scotch and yet others that go good with rum or wine. Each one enhances the other and brings out flavors that may be missed if you're drinking water. Another example is putting parsley in a food dish. It really doesn't do anything to add flavors, as parsley is pretty bland, but, it brings out aromas in some foods, which in turn add to the eating experience.
I think coffee goes very well with many cigars and really brings out flavor profiles in a milder cigar. Often times when I drink water while smoking it does the opposite of what you'd think. It doesn't cleanse the palate, instead it seems to add to the build-up of aftertaste and sometimes ruins a cigar towards the end, making them harsh tasting.
Now, everyone's palate is different and this may not be the case with all smokers. But, it is my experience.
As far as price ratio to worth ratio.... MSRP is $13.50. They pretty much hang well with other Dominican cigars in that price range.