LOL. Including your post!This post quoted above is a great example of why you shouldn't believe everything you read on the internet.
if you keep checking, you'll find that the studies quoted by DAN are crap studies; they have nothing to do with the "less fatigue" reports from divers. aside from a different definition of fatigue that what divers refer to, the studies look at single or very small numbers of dives, whereas most of the diver reports are of using Nitrox for a series of dives over multiple days.Reduced fatigue from diving Nitrox has been determined to be nothing more than a myth by DAN and other legitimate respected scuba diving resources.
As far as free Nitrox? Never seen that anywhere.
Ask DAN: Can Diving with Nitrox Prevent Fatigue?
And your disbelief in free Nitrox is easily refuted. Well, OK, YOU haven't seen it. which is not a very good argument....