Part of the issue with away seating at Celtic Park, at least in recent years, is that a lot of the rest of the stadium has been empty for standard league matches. They even closed the top part of the Lisbon Lions stand (I think - could be the opposite one) and covered it with a banner, but still insisted on placing the away fans in the worst part of the stadium. There must be lots of people who just won't go to Parkhead because the view doesn't justify the price.