Luckily, I found Pinside when I was researching my first buy. Echoing many comments above: I had done my research to know what I was getting into. Soon after purchase, I needed to rebuild my pop-bumpers (thanks VID!), learned how to do basic maintenance, bought a soldering iron, leaf switch adjuster, etc... For me, this was an undiscovered pleasure: tinkering with my toy.
Fast forward to Nov 2020, and I got the green light to buy AIQ NIB. Even after 4 years of tinkering, I had WAY too high of expectations for the contents of my big Stern box. Suffice to say, I spent a good month of adjusting and 're-installing' aspects of the game to get it to work as I liked (and as it should.) I'm still waiting for a date for my replacement (unpopulated ) playfield.
Point being: I thought I knew what I was doing. I naively thought there might be a loose connector or two, but I did not expect playfield pooling, or about 8 different issues that are likely tied to poor manufacturing/QA.
I thought of suggesting some kind of 'white glove' service (or SquareTrade warranty) for folks new to the space. But if that is $300 for my kid's $1,000 laptop, I can't imagine a newbie paying an $1,800 premium for a $6,000 (pro) toy. I always wondered if LE's came with additional attention to detail. I guess not.
I enjoy both of my toys, and I enjoy my tinkering. However, I've checked the NIB 'box' off my bucket list and will be looking for lightly used machines from people who don't want to be a 'pin technician'...