Are you looking for a total package for under $100 - generator + headlight + taillight? That's going to be a challenge. You might be able to find a bottom bracket generator, a B&M Lyt, and a taillight under $150.

BTW, there's a reason many (most?) dyno lights are mounted on the fork crown. That arrangement shows the road surface really, really well; potholes, washboard pavement, and sticks are very visible.

If you want to be green and are most worried about car drivers seeing you, perhaps you should check out USB-rechargeable lights. There's some cheap lights that are pretty bright.