We (my club) still have a few tickets at regular price (35.-/day for adults).
I'll be there on Saturday driving from Bern and can propose one place to Zürich. Back from Zurich -> Bern probably late evening.
So, I you once want to enjoy real Karaté with the best guys worldwide (Last Championship here was in the 70s!), you must come to have a look :)
Don't hesitate to check on : http://www.karate2011.ch/