You could set something up fairly cheaply using pvc, clamp lights, and the 6500K screw in compact fluorescent bulbs available at wally world and various home improvement stores. Here are the
DIY lights over my 125. I've added 6 more clamplights since that pic. You can figure about $10 per light between the cost of the bulb and clamp light reflector. or online you can find higher wattage screw in bulbs and you'd need fewer clamp lights. I'd shoot for 2-3 watts per gallon and you could grow almost everything except the most light demanding plants.