Quoted from jrpinball:
There's nothing wrong with a little playfield wear and a little banged up cabinet. As long as the game is shopped properly and everything is properly adjusted, it will play well and be enjoyable. Bad backglasses do bother me a lot though. It's a good thing there are options, but it may not pay to get a new glass for an otherwise marginal machine.
This... I have a Sound Stage I rescued from certain doom in a dank concrete basement under a double wide overrun with the dogs this guy bred. Mold remediation, adjustments, and whatnot and it's cleaned up really nice - but the backglass is 35% missing and trashed. It's just not worth a new BG...
I always thought of myself as a LEP man - but maybe I'm more of a MEP... nothing makes me happier than bringing them back from the dead and finding the bargains... but I'm just as happy about finding a working system 11 for $800 as I am for the $150 EMs. Bonus points if they aren't AAA games I can find on location; I'd rather get the weird titles.