Every country had a different system - some like Germany, Canada and Czech republic had systems where you just chose the events you wanted. Would have been better if we'd have done that. The system we employed favoured people willing to gamble with huge outlays.
Still lots left on the German...
The Czech site has lots of great tickets but you have to be Czech to buy them - I phoned them up. BUT if you have friends in Czech Republic you can get what you want.