Well, speakin for DFH, we always got them trouhg either justtickets, first year or through ClubArnage. I don't think there is a big market for tickets in Holland, since it is not very popular with the Dutch crowd for some reason.
I had to buy on ticket last year from *bay, payed 80 pounds, bought it from some lady, she only had the one ticket and could not make it to the race herself, but she was not planning on selling it to me for face value! I did offer this to her.
I think the number of profiteers is relatively low, maybe we should make more name for CA en pursuade people to sell their spares through our webservice, to make sure tickets stay with real fans and not go to waste.