A friend of mine has a DM and a Baywatch machine that have been sitting for a few years (ok a lot of years) and he may be willing to sell them. He bought them at auction 10-12 years ago. I did a quick inspection today, and it looks like they were both on route in Europe (Germany is my guess based on the coin slots). Both games need a good cleaning and new rubber, probably new bulbs all the way around, and may need re-built flippers based on the strength of them.
DM - Cosmetics are good. Sound does not work at all, but I assume that would be an easy fix. The display has some lines going down through it, but it is viewable. Not sure if that is wiring or a display issue. The big issue is the magnet in the back appears to be broken. The ball raises up to it, but the ball does not stick. The game seems to just sit after this. Since the magnet contraption is a big part of the game it make it unplayable.
Baywatch - This one has all sort of problems. The large display looks awesome, then cuts out completely. Sometimes it will randomly turn on if you bump it. Could be a big issue if the display is bad, since it is a discontinues size. It also seems to not recognize the pinballs have been popped up into the plunger area. The game just keeps putting up more pinballs one after the other. Lots of gremlins seem to have crept into this thing. Also, well, it's Baywatch. I don't think my wife would let this one stay in the house for very long based on the art. This would be a fix it up and sell it machine.
Before I make an offer on them I thought I would get some advice here. I honestly don't know much about fixing them up, and I am sure I would need to hire someone to do some of the more major stuff.