Getting tickets is a lottery each year (unless you're very well connected - which I ain't!!).
You apply in August and your application goes into a ticket draw. If you're lucky you get a letter offering you the tickets and then in February you get your allocation and have to cough up the dough.
This is my first attempt and I got lucky. A guy at work tried for years without success until last year. Mind you I would hate to have sat next to him! He's harmless, but an old batchelor who lives on his own so needs to talk to you every time you pass. I re-route myself daily!!