ill have to dig up the link but the original company that made dafts sells replicas made from the same mold for $65,000, i believe complete with full LEDs. seems ridiculously expensive but hey if you have that kind of money why not?
edit: heres the link, apparently the LED Effects website is no longer, but heres an excerpt
http://www.thedailyswarm.com/swarm/daft-punk-helmets-sale-65000/
the 'daft girls' are actually friends of mine, their helmets arent exactly the same quality as Volpins but cool nonetheless:
http://www.thedailyswarm.com/swarm/daft-punk-girls-how-masks-were-made/