Where Can I Grab One Up At

I was wondering I wanted to get a 100w CFL fixture and bulb I was wondering where the best place to get one is.. I want one bulb instead of 6 little cfl's..

they have them at wall mart but they are warm light, which s better if u use during veg but still can use. some of the lower wattage cfl's are white light which will be better if u add them in there along with the 100w warm light bulb.