@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.
Store availabilityPre-Order Releasing Friday 30 June 2017
Pop! Stranger Things: Joyce In Lights Vinyl Figure
Pre-Order Releasing Friday 30 June 2017
After much demand from Stranger Things fans, Winona Ryder's character Joyce has been added to the initial first wave of figures! The new figure comes complete with her trademark Christmas lights. Joyce stands about 4 inches tall and comes in window box packaging.