Hello, I’ve come across xenon lamps on eBay and blue lamps on several occasions, and last but not least also one that cost the limp 1.99€ with shipping. Since I already have blue stand light (sin has this little but I did not install it) I wanted blue Ablendlichter because this in itself not only offers optical advantages. But then you ask yourself the question what good 2€ lamps? Should one then reach to the more expensive ones or go the cheap ones also (holds still not quite so long).