I was offered this when I entered the DEN AC on Thursday. I said, "No one is actually doing this, are they?" and she said, "yep, I had 2 sign up this morning" and she showed me their applications.
Either way, AA is getting some incremental revenue that won't affect the overall attendance in their clubs. I guess I have different priorities with my money. My biggest regret, however, is that they used to offer them at a price I could have afforded and should have bought it at many years ago.