As someone who entered the competition, I'm thoroughly disgusted the person didn't have the deceny to send the tickets back to Bloomsbury. They should be heavily fined for what they did - I am so glad they got taken away because I doubt JK wanted the ticket thing to be about money and bidding - it was randomly chosen for a reason, to be equal and fair to all fans. Trying to make them compete by bidding prices isn't fair.
Boo to the loser who did that.