Trust me money isn't the problem. It's convincing the mrs that I need to spend that much; especially since we're in the middle of planning a wedding. Kero I actually am interested in a few, but the thing is I can honestly say that I've never in my life worked on a pinball machine. I'd hate to drop money into something that I have no idea what will cost to get up and going. I do like the Time Warp machine.
To be outright honest I'm a little afraid/nervous of doing one because my whole thing with a pinball machine is man if i screw this up I know i lost money. With arcade machines im more familiar.
You'll never learn to swim if you don't get in the water...And it's not difficult to convince anyone to spend $275...
The amount of money they cost to get up and running depends on how much patience you have. Most circuit boards can be repaired for under $20 in parts. Getting frustrated and buying a new PCB will usually set you back over $100 EASILY...so, to (fully) rebuild a machine is $100 on the low end and sky's the limit on the high end. You don't lose money unless/until you sell it for less than you paid.
...and hey, it's untested, you might get lucky and it works. Doubt it seriously, but it is possible...