nowhere unfortunately :/ Like you I don't want to fork out £600 odd for it. The only way is getting a cracked version which is illegal...... I think there is a trial of the program, but that will only be for 30 days or something :/
It's illegal to download it. People spend tons of money developing products so that you can buy it legally. How would you feel if someone stole things from you?
That would be piracy and we can't condone it.