First, CMKX are wall street symbols for Casavant Mining. (Sometimes its referred to CMKM as the symbols were changed.) It was a highly pumped penny stock between 2003-2007 selling millions to billions of shares (believe it or not) when it was revoked by the SEC. Now the jury is out as to whether it was a true scam as followers are still waiting for an inevitable payout which has never, ever come. CMKX followers still hang out today in a Business investment Paltalk chatroom. If you Google "CMKX" and you will see it is like a computer "rash" with many links, proboards, forums, etc. showing lots of interest (even today).
No doubt, this domain has some value, but just not sure by how much.