The Lost Type is a font foundry that allows you to ‘name your price’ when downloading typefaces.
The quality of these fonts is generally pretty high, and they have a reasonable selection. With each font having its own display picture making them all look quite edible.
Every font has a page dedicated that tells you the designers name, the classification, whether or not it is web optimised and generally anything else you would need to know before downloading the font.
Because you can choose to pay nothing, I found this site excellent for working on my own little projects and playing around with fonts in photoshop. I would however urge you to donate when using these fonts on live projects. A lot of work and love goes into the making of these lovely typefaces, and by paying a (what you would consider) fair price, you are contributing to more lovely fonts to be made, and for other aspiring designers to use them too.
You can visit Lost Type for yourself here.