Ok so the group buy is 10 or more, and as for the DOT question I will quote Kevin on that.
"Yes, the tail light is both DOT/SAE and E-Mark, so it is legal to use in USA/Canada and Europe/Japan, pretty much everywhere in the world."
Sweeeeeeet.....
I'm "peripherally" interested. As in: depends how good a group buy we're talking about, haha.
Ain't nothing wrong with the tail lights I've got now. ;-)