the most dodgy repair/pinball machine sale i ever heard of was the 2 mentioned below >
1. a KISS pinball sold to a bloke from ebay. add said boards need some work. (machine arrived with all boards completely rooted, and the boards werent even for that machine). Buyer ripped off bad.
2. the 2nd most bodgy pin repair ever, was the idiot who redecalled a fishtales for me and placed the new decals directly over the old decals with 500 big bubbles showing, and then asked me for double the $ cause he had a hard time making the new decals stick/take to the cabinet. the same bodgy/dodgy seller sold a Sega Lost World/JP 1997 pinball with half the playfield mechanicals missing and said it didnt need it/all would still work fine. that bloke is still in business and is a scumbag from willowbank QLD.
there is dodgy/bodgy, and there is just downright dishonest. lucky our industry these days is 95 percent fine. word travels at lightspeed if anyone see's a dodgy pin seller/repairer these days which is great for the hobby/industry thankfully.