I've just bought 2 tickets to a live kids' show in London on Saturday afternoon. I was one of only 2 bidders and they were cheap so I'm not too bothered if they turn out to be fake - i'll just have to fork out for box office ones so my DD isn't too disappointed.
Anyway - i've suddenly remembered some tale about people selling tickets so that they know you are out, and then burgling you during the performance. The sellers are in hundreds of miles from London and say they were coming to the show but now can't (which seems a bit unlikely). They are major sellers (over 6000 items, 98.7% feedback) and have quite a lot of neutral and neg feedback but for selling tatty DVDs and claiming they are new. But they have lots of copies of the same thing, so I'm not suggesting for a moment that they are knock-off!
Anyway, would you go and see the show, assuming the tickets arrive on time?!