my acutal MTB is insanely expensive, but it works really good, much better than my previuos bikes for about half, so there is a tiny bit of sense in the cost.
Lupine lights - the incan versions - were so much better than the rest of the breed, that one could argue about the higher cost
(like surefire, they had their bulb / reflector combos be made just for them. way better than something standard)
but the led models simply are not that much "better" than whatever else maker,
so cost <-> gain do not come together, not the slightest bit.
And that could be the reason there is not much talk about them at all
(check what maker/models are mentionned often ... there is a reason for that)
if you can read german, you could make yourself fun by reading in the lupine forum directly,
stubborn, short minded Lupine evangelists not even able to reflect actual facts ... (f.e. when there are technical data released showing something and then discussed)
I really like to browse there from time to time