These awesome bright bulbs are going for a song. They used to be $28 when they first came out a few years ago. I'm guessing they're being discontinued.
Stick them in an Ikea uplighter and light up a whole room. Just keep in mind the bulb is a little long, so the uplight will look like an upside-down excited guy wearing a very short skirt.
I spotted it at Bunnings Stafford, QLD. Not sure if it's nationwide or not. There were quite a few left, in both 5000K and 3000K, ES and BC.
Or embrace 2015 technology and use LED globes.
With the bonus of not having to wait for these things to warm up.