wht wattage are ya looking for?
iv brand new 23w 2700k and 21w 5600k s for sale £5 each...push in fittings..they are more or less standard bulbs wht ya cn get in supermarkets..($16.99)
if your looking for bigger ones then try electrical shops...at least shops in dundalk are selling now allready 250w max cfl bt they are very pricey.