I've ordered three of them...all from Amazon (not a 3rd party/marketplace vendor), one when it came out in March of last year, and two more this past April. All of them are fine.
No idea what this means, but B&H, Adorama and everyone else seem to still be selling it, so it is likely an issue or glitch on Amazon's end.
Are you EATING them? What are you using 5 flashes for?
Re: Amazon: 3rd party fraud/complaints will also cause valid products to be pulled due to listing conflicts, inconsistencies.
I've filed a 'wrong description' complaint for just this reason, and the product was yanked within several hours.
In defense of 3rd parties, Amazon sometimes tries to list different products as the same, with different options and this will largely be the source of listing mistakes (honest mistake by seller). As an example, especially for ratings purposes the skylanders games are completely different on 3DS than the others, sometimes 2-cell flashlights are listed as the same product as a 3-cell counterpart, but may perform differently.
If B&H or Adorama yank it as well, then I'd expect there's something wrong, otherwise . . . as MtS mentioned, it's probably an algorithmic quality control.