I think it's a good price, the CM-800's have the carbon fiber neck with ebony fingerboard. I have a CM-800 neck on my MAT M-451 from -85. I had a NOS neck and found the 451 which had a bad neck. I like the MAT's, the tone and sustain is excellent and they are lightweight. I also have a MAT 750 series prototype from 1984 in copper chrome finish with gold hw.
Mike