Just set up and took some pictures of the 'project' machines I have for sale. I have maybe spend 2 hours total with them (mostly getting them upright), so my information on them is vague. Pictures of all machines here:
https://imgur.com/a/hCrSujN
$950: High Speed is missing BG. Battery holder on CPU has corrosion, but it doesn't look like it went on board outside of the terminals. Playfield looks better than average, and cab is average or slightly below. I haven't even cleaned any portion of the machine and it's already presenting decent. Before I put it away, it did boot with a U22 error.
$1250: Lethal Weapon 3. Cabinet is nice and playfield looks nice as well, with some minor insert decal wear on the bullets (pictured). It has the Light dome on top, but missing actual light mechanism underneath. Game worked before storage (wouldn't launch the ball so I thought it was the gun trigger switch), but now on bootup, the DMD lights up scrambled, then goes blank, GI goes on, but game won't boot. Haven't done any diagnosing.
$975: Comet is pretty decent. Cab is better than average. Playfield has minor wear shown, as well as some crazing/ball swirls. Haven't tried cleaning anything. Center ramp looks flame polished at some point, but entrance looks cracked, although plays fine. Comes with a Pinscore display board, and game works, although the left flipper needs a serious rebuild.
$1700: Pink Panther is an odd-ball Gottlieb system 80 that is relatively rare. Backglass has the normal flaking that this title has. Playfield looks decent, although some wear starting to show on the right side of the PF. Cabinet is pretty nice. Worked great before putting it away for storage, and haven't had time to reconnect everything.
$750: Space Mission is in really nice shape. Only small wear on PF from flipper drag, and BG looks near mint. Haven't had time to set it up before putting it away, but was working.