Skylasers (LaserBTB) is (as far as I know) the only company selling them prebuilt. You could however purchase the diode for $135 and build your own any way you want it.
Skylasers (LaserBTB) is (as far as I know) the only company selling them prebuilt. You could however purchase the diode for $135 and build your own any way you want it.