@SupaPhly part of the reason could be that they are more responsive to FOREX fluctuations than MS or Valve. The other reason is that we are so small for Sony that they can't be bothered to match what happens on the other platforms.
If you have both consoles it allows you to price shop, i've picked up a few games this way.
Embark on a new adventure in Skylanders SWAP Force. The new game introduces the SWAP Force Skylanders characters. These Skylanders have the unique ability to mix and match their top and bottom parts to create new characters with different in-game abilities and powers.
The SWAP Force Skylanders characters have the ability to mix and match their abilities and powers. Separate the sixteen figures and snap them together in new combinations to change their powers and abilities in the game. 256 unique combinations in all!