They were returns. They were like gold dust. You may have missed the lengths @Bozza went to to secure one for an aging and baffled old buffer who had a train ticket and hotel but no way into the Ajax castle....I don't think any STHs that want to go to away games in Europe (should we get there) need to worry too much, unless we get drawn against a team with a tiny ground. There were still tickets popping up for Ajax when we were over there, and Marseille tickets went to MyA+, can't remember with Athens. I think supply will satisfy demand for all STHs in the majority of cases.
Having said that, it was one of the factors that gave me the push to book Leicester away tbh.