Am I the only one having problems locating a shimano 105 front derailleur pn FD-5504L (black) with a 28.6mm clamp?

Not only has the guy building my bike not been able to locate one, neither have I and whenever we think we've got one, it turns our that the vendors (multiple) have sent the wrong one, typically a FD-5501L (double instead of triple).

I've heard unsubstantiated conspiracy theories as odd as "...Shimano produced and sold 55,000 of these to Trek, but Trek has only produced 4,500 bikes with this unit on them..."; and others.

Do any LBS' readers have one on your shelf?