Yep that's a scam. Since Adobe went with their subscription service they've stopped making stand alone versions. You can't buy them at all now so if you want the latest you are buying a subscription direct from Adobe - they do do a neat and affordable photoshop and lightroom bundle deal aimed at photographers.
Be careful with comments on facebook; many a scammer will have multiple ghost accounts that they use to give their own ads lots of likes and also say "hey I got it its great" type posts. Heck there are services where you pay X amount and you get X amount of likes.