So here's the thing: these are obviously not milspec or military surplus, which is fine with me. Surplus is hard to come by after a decade of wars.

Zipper: As others have noted, the zipper is pure garbage. And by that I mean I'll be having it replaced with a YKK zipper even though this one is not broke or malfunctioning. Zipper is of the absolute cheapest quality.

Sizing:
I'm a big dude - 6'4, 309 lbs. I normally wear a 42 waist and 30-32 length in Redhead/Lee branded blue jeans. I ordered the 3XL size, and this fit me well - not too snug, not too tight, a little room to breath. The length is pretty dang long - longer than my other baggy-fit shorts. I'll wear these for a couple weeks but I'm thinking that the leg openings themselves need to be taken in as well as the length shortened a couple inches.

Material:
Typical consumer grade, not milspec/surplus. Don't expect to run around in the woods with these, they will shred. If you want that, get the real deal.

Overall:
If you can get past the garbage zipper and oddities as far as sizing/proportions, these look pretty slick and the material itself looks like decent quality. Value for the $$$? Not sure it's there considering I'll probably be looking at $20 in alterations, but in this kind of style there are not many options. Milspec/surplus stuff won't be baggy in fit, and is not really fashion/style oriented in cut/design. YMMV.

UPDATE 8/20/12:  For folks wearing larger sizes such as myself, there are not nearly enough belt loops.  These shorts have 5 belt loops, but I really need 9 like my blue jeans, to keep the waistline from sagging and bunching oddly.  This problem was really aggravating while wearing them for a full 12 hr day.

UPDATE 8/27/12: Well, after wearing these only 3 times and running them through the wash after each use, zipper teeth have started to break off and dissapear.  Now I know I commented on the sipper quality previously, but this is pretty bad for an item of clothing as expensive as this is.