I stumbled across this awesome little site a while back. It's full of really great fonts with the unique feature being that you can choose how much you want to pay for them - the first of its kind.
The power is in your hands! You can pay whatever you wish. The option to put in '0' is there too - which means you will get the font for free if you feel that is what it is worth. Although the fonts are so wonderful, I'd feel guilty taking them for nothing!
Above are a couple of my favourites :)
Hope you enjoy!