If you are a student you can invest in student additions which are generally much cheaper, or if you have a friend/family member who is a student ask them to buy it on your behalf and then buy them a drink. :icon_cheers:
Alternatively you can upgrade from earlier versions of the software, if you have any, which can work out much cheaper too.
If I can give you one piece of advice... wear sunscreen... er I mean buy a legit copy. I would invest in one of the 'Creative Suite' bundles rather than buying one or two packages stand-alone, it will be a hell of a lot cheaper in the long run.
Another bit of advice - contact your local Business Link and see if there are any local grants or loans in place for purchasing business equipment (this often includes software). In the past I have been able to get up to 50% funding - obviously you need to be already trading or a new business start-up to access funds.
Don't think about the initial outlay, imagine how much you will get paid from the great stuff you end up producing.