DISCLAIMER: These are not my machines. I just went to look, and decided to pass. However - I figured someone else may be interested...
1) Paragon: Backglass is shot. Paint is peeling off in big chunks. Cabinet in very rough condition. Playfield is OK, but some inserts have fallen out. Some plastics missing. ...very rough shape overall.
2) Derby Day - also in rough shape, but the backglass seemed OK.
3) Flash Gordon - probably in the best shape of them all, but missing backglass.
4) Arctic Gun - very rusty inside.
...plus another couple heads - one from Time Machine and another...not sure.
The listing is asking for $2,500 for the lot, but he will take much less. He has someone offering $1,200, and he seemed like he'd take that. He was also willing to let the Arctic Gun go for $400, but I thought it was too rusted for that price.