Ive seen them at Home Depot.
Phishy Lava said:
Thank you but they don't seem to have the 200 watt BR40s people need for the colossus.
You can, however, get them from Norman Lamps.
Here is another good source, they sell euro based bulbs for mathmos lamps too.
the one i use is lightexports.com to find my bulbs i have gotten some really good deals here