Hard to know. Reading on here there's a lot of people going to 2 matches, 1st and 2nd or 2nd and 3rd so Switzerland game might be the hardest to get. Add to that a few got tickets via the ballot, can't go, IT issues etc.
Most likely would be the Germany game as the cost will put a lot of people off. Not heard if any 12+ pointers had to pay for the Cat2 tickets (EURO400)! If there aren't any they'll be 3.5K+ left for that game... if they have then it will be less. Not sure how many are willing to pay EURO400-EURO600 though!