Mach was selling them for a short time, and IIRC, only the flat ones (non-raised, non-neon ones).

Now you can get raised edges (made by laminating 2 thinner pieces instead of milling out of a thicker piece as DarkStorms lenses were) neon ones + optional laser engraving.

Well worth to take a look at. When Mach was selling them I got the 5-pack - very nice.

/Michael