The ones I have installed (install described here: http://www.vehicross.info/forums/sho...&highlight=hid) are ~330USD, called OLLO. Two weeks have passed since install, and only noticeable thing is that one lamp now and then sort of jerks. It does not go fully off-on, just slight momentarily drop of light level. Dealer, who sold me the stuff, is ready to replace the bulb, but I haven't had time to visit him at working hours.
Recommendation: don't go w light temperature higher than 6-6.5 KK.
And - get bi-xenon H4. :-)
Also - when installing anything higher than 5KK - consider replacement of front parking light bulbs w slightly blueish 5-LED sets, and "horn" bulbs w 1-LED bulbs of same blueish color.
...vita est via et via vita est...