@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.
Captain America Sam Wilson Vol. 04: #Takebacktheshield (TP)
The world has received an ultimatum: Peace in our time - or face the fury of the Flag-Smasher! Amid the trending torment of #TakeBacktheShield, a defiant Sam Wilson stands against a rising tide. But he is not alone! For one thing, he has Captain America: Steve Rogers at his side! That's a good thing, right? Then there's Misty Knight, who is eminently capable of taking matters into her own hands - just don't call her a sidekick! And because you - well, somebody, probably - demanded it, D-Man gets his moment in the sun! But when the all-new Falcon and Rage get together, surely nothing good can come of it! Plus: A classic tale that pits Steve Rogers against a very serpentine president! Collecting CAPTAIN AMERICA: SAM WILSON #14-17 and CAPTAIN AMERICA (1968) #344.