The Super Nova's are great lights, made around the corner in Germany. Also home to Lupine Lighting.

Over here in the UK they are also expensive but in America htey are exhobitantly priced because they are imported adn your import laws slap a heavy tax on imported goods to protect your industry.

Also lets look at the technology being used.
It's basically a motor car headlight circuit fitted to abike.
The HID bulb is around $100 in price and that just the bulb with igniter circuit. You still need a ballast circuit to provide the bulb with a steady 100V charge for as long as possible.
Then youneed a high capacity battery to provide the amps to power the whole thing. Those battrey's don't come cheap especially Nickel Metal Hydride and Lithium ion battrey packs which have electronic control circuits built in to regulate the charging current and voltage.
So around $200 for battery and charger, $100 for a bulb say $50 for the electronics and housings you cna see where the money has gone.

With the Super nova you have a programmable charger which will help with battery life.
Theres a programmable control switch to regulate the light intensity (no easy task withan HID bulb) and battery life.
There the housing wqhich are designed to dissipate the enormous amount of heat generated.

At the end of the day you get what you pay for. ou cannot compare a Halogen to HID. It's nowhere nearas bright and the run times are always shorter for similar light output.

To me run time = safety and thats cheap insurance.