Here's what I use for a CFL Fixture.
http://www.tractorsupply.com/jobsmar...r-lamp-3208291
I buy my bulbs from Walmart. 6 packs are in the same price range you quoted. What I like about these fixtures are that they are made to take a 250 watt infrared lamp to keep chicks warm so the sockets are well made. I've had a CFL in one for a year now that I've run 12 hours per day so it doesn't seem to be overheating the CFL. I'm sure you can build something cheaper depending on what sockets you use but these are handy. Right now it's lighting a petunia that I've had for a couple of years.