not at all - £50 for the full conversion kit. Not £150-£450 like what the main accesories companys are charging (rip offs)
I started by supplying the bmw gs chaps ages ago, and came across other suppliers making up rubbish "oh these are military grade HID kits these are" they were talking out of there arses. They were charging £120 to convert a dipped beam on one!
I charged £35 for the one kit and sold 30 kits in a night. I got a bunch of really snotty emails afterwards from the other suppliers saying I was wrecking their business... but at the end of the day. They were taking the mick.
They are really easy to install, but i think the landy is the most awkward one I have had to install.. EVER! still only takes 30 minutes though.
They do put out considerably more lumens than a standard halogen and the light is more natural to daylight. I find driving with them at night much easier.
Also draw fewer amps off your electrical system once up to temp, they do draw about 50% more for around 10 seconds whilst they warm up.
Biggest ballache is drilling through the lamp shell to get the connector out. You could take the connector apart and get the wiring out that way. But i could not be arsed. And I like the option of being able to put original bulbs back in 5 minutes "IF" someone did ever say anything.
They draw fewer amps off your electrical system when up to temperature, but do use around 50% more whilst warming up (about 10 seconds)