Chevron Brand Energy Saving Bulbs - 6 and 4 packs for $5 at Big W (Stafford, QLD), in the home improvement/auto section.
Original RRP was around $11 for the packs.
I picked up two 6 multi packs (2 x 9W - 11W - 18W) and one 4 pack (4 x 14W), a total of 16 globes for $15.
MOD added location and location uncertain, to title
These are the best CFL lamps that I've used, and the cheapest too, for less than $1.25 a lamp. Warm white is far better than the bluish daylight of earlier CFLs. Unfortunately, Big W in Hobart doesn't have much of a range - and what they do stock is usually ES (screw base). Who uses that?
Philips now has CFLs in 45, 60 or 80 watt versions, but they're quite expensive for domestic use. The 45w one costs $25 or so. These are pretty bright, they'd equate to 200-300 watt incandescent globes. Anyway, the government stopped imports of old-fashioned globes in February and will forbid their sale in a few months. Better buy them while you can. The 240 volt halogen ones are a bit more efficient but at four times the price.