Ilmung, I have several set-neck DeArmonds - I have limited recent experience playing
electrics, but I've been pleased with the build quality and the tones being
produced thus far by these instruments.
IME / IMO...
$600 sounds perhaps just a little on the high side in the current market for a used set-neck
DeArmond Jet Star but not too far out of line - if in excellent condition with the original
DeArmond Gold Tone pickups and a decent HSC, and if $600 includes shipping, maybe.
The wild Tyrian Purple finish seen in the link ruedi posted seems to
be less common than some of the other colors and may command a somewhat higher price.
Are the pickups the same as the green M-73 in this photo?
If so, it probably has very similar playing characteristics and finish quality.