Interesting.I contacted cni a few months ago. 30mW 589nm module $540 80mW 589nm module $910
You can get a 10mW 589nm CNI module from dragon Lasers for $370.
I saw that Dragon Laser had a CNI 589nm 10mW which Dragon Lasers calls a PH module at $370Sorry to tell you so but that laser is old and used, Also being in the UK doesn't mean much since the UK left the EU in jan this year so it will still pass through customs as a package from the US would. Also, That price is too steep since I can get a Brand new 80mw yellow module from dragon lasers for 300GPB and the overall build cost would be way lower than the 400 you want for it and I would be getting a brand new laser in a custom metal host of my own design. Edit: You also mention in that thread that the laser also has an issue with mode hopping on start-up sorry but that further makes me believe it doesn't worth the price listed, I wish you the best of luck in the sale but I am not interested. Clarification: Even if the laser has low hours and is in a bairly used condition I cannot be sure on the condition of its internal components and crystals due to age. Further clarification: I know that the UK has left but the trading relationship within the EU will stay the same for a period but I have found out that Greek custom can be quite... Picky.
Looks like they have changed it to 50mW at same $370 stability 20%, 3VDC versions 26mm X 55mm which take 2 C 1.5V batteries.
CNI also makes circular drivers that are 3.6VDCVDC for 1X 18650 so perhaps one can be ordered that way for you if you want.
The 589 Spartans all took 1 X 18650
The CNI web site doesn't show either of the DL modules any longer in product listing, only a black PGL-H1 26mmX 100mm. and a similar smaller one that is max 30mW http://www.cnilaser.com/Laser-Module.htm
If you order one from Dragon Laser be careful to nail down what the actual specs are --what you can expect to receive.