well that will be at their full retail price. I managed to find a army guy on ebay that had some left over from his tour.. beware buying on ebay though, i think there are some that were made for airsoft in the UK and those aren't the good ones, so i just made sure to get some from someone in the service. since they are govt. issue there are plenty floating around at various prices, so no need to pay the $80 or whatever they are asking on the revision page.
since this was merged from a different thread il throw in a picture to keep it part of the pic thread.
this guys feedback isn't high but his location is on an AFB, and paypal guarantees purchases. might be a cheap snag. not the same guy i dealt with though, bought mine about a year ago. there should be plenty of sellers if you search around.
Sawfly Revision - eBay (item 150522554275 end time Nov-24-10 16:54:48 PST)
or if you are into the whole Oakley thing, they make 'ballistic' M frames, but i haven't seen them hold up to shotgun fire like the revision. they are about 4x more and have a 'cool factor' if that is your thing. hes got some of those listed too, look under sellers other items. fakes are more common here too, but just be sure to know who you're dealing with. preference would be someone serving in the military rather than someone with a seemingly limitless supply of them.
and to make this post any longer, heres matt damon in green zone wearing the original ballistic M frame, (the one above is the newer easier to find 2.0 model, its cheaper too.)
you can differentiate by the nose piece and the appearance around the legs of the frame, the originals look more streamlined and thinner. I'd probably just buy the revision unless you're an oakley guy. be prepared to pay even more for the oakley prescription inserts. really i have no reason to recommend oakley unless you wanna be cool like matt damon

you can get away paying ~$20 instead of $100+.