Did you poke around the site from the first link? I bookmarked it- have to do some research, but he has Sanyo dynohubs for $40. He'll build it into whatever wheel you want, but has spec'd some budget friendly builds. Hub w/QR+wheel built up for $120 give or take. Looks like the cheapest build would be a dynowheel, with a halogen front and LED rear for $170.