Pilot automotive makes some pretty good lights at affordable prices. I've run a couple different sets and been happy with them. My local autozone carries them , think I paid ~$30 for the pair I have on my toyota.

http://www.amazon.com/gp/search/ref=nb_ss_auto/102-6236111-8075357?url=node%3D15690151%2C15857511%2C15736321&field-keywords=pilot+fog