The Game Cases (Standard as well) come with a numbered slipcover (Foil & Embossed). It says it is limited, so it raises the question if the slipcovers are limited quantity, and what happens when the limited quantity is reached since this is an open pre-order?
Standard with Slipcover at $34.99 is actually not too bad. I might grab two copies since shipping to UK is a bit more affordable these days.