Well it's only $3 more dollars on amazon for a copy shipped so that's probably why. Wouldn't be surprised if amazon gets more stock still.
People jumped the gun with it being rare. You heard more this is is going to be uber rarez compared to MGS is a great quality game.
No one jumped the gun about it being rare. The PS3 version is in fact, OOP. When Amazon or Newegg get more in, notice they only restock just a small handful. These are the last remnants they are getting rid of as they locate them from their own inventory or are able to acquire what's left from wholesalers/distributors. And this is just Amazon and Newegg doing this, mind you.
Point is...Konami isn't printing/manufacturing any more. Get them new while you can.