Do you have a Habitat for Humanity ReStore nearby? I got a nice Hampton Bay ceiling fan for $35. It's sometimes hard to find multiples of the same item, but if you only need one they might have something good.
I do need two, but I keep meaning to take a trip there to check it out, so thanks for reminding me! I also need a ceiling fan
I was going to suggest lightingdirect.com too. Also, I think the Pottery Barn light fixtures are quite attractive. They aren't cheap, but every so often (without any rhyme or reason, imo), they go on a massive sale.