JonHob: I work for Jessops Brian and we spoke about this very thing. I would like to see it but would Nikon and Canon open up on the high street? Could they afford to? Possibly Sony or Panasonic perhaps. If anything, camera gear will now increase in price (IMHO). When was the last time you got a real 'deal' from Apple? They set their prices and very rarely move from it.
Camera prices will decrease. Japanese government will print more Yen, thus weakening the Yen to boost its exports, and internal economic activity. A weak Yen will mean cheaper cameras from Japan for us.