The October issues of Mac Life has a nice article on alternatives to Adobe's Create Cloud. Adobe has moved to a subscription model where you have to pay $50 a month to use their software suite. So $600 a year in perpetuity is a bit steep for most folks.
So here are some links to the more inexpensive alternatives. I would like to the article if I could find it on Mac Life's site.
Instead of Photoshop try Pixelmator $19.99.
Instead of Illustrator try iDraw $24.99
There were a number of the options for other Adobe Suite but they tended to be on the pricier side of things.