I have seen them listed in some GL lots, but then you have to buy a few pallets of other junk just to get one or two bulbs which may still be no good. After searching for another source & cross to a common lamp and getting the detailed specs for this lamp, I realized that it was likely only W-A had it. Prior to jan 1, you could get the specs, drawings, etc. from the W-A website and even order it on line. They seem to have changed all that in the past couple weeks and after a few email referrrals I struck pay dirt with the contact info I provided. Even though the lamps are expensive, I figure one or two will outlast me given how much I expect to use it.