Interesting, thanks. I think we went on the same day so probably walked past each other. GO are always a bunch of miserable buggers anyway.
The security scanning is only at the entrances/exits of the outside halls but you can walk between 1 and 2 with no scanning; otherwise people would be able to wander in and not pay the "bargain price" of 80chf of course.
I had no idea a stall would cost THAT much there though!