I was sooooo tempted one time.
There was a MM at a Turnpike plaza in Miami a few years ago. It was dirty, but in good shape.
Get a fake Business shirt and walk in with a replacement ( Striker X, etc. ) and a fake invoice.
Video surveillance and the fact I was chicken sh*t were the only 2 things stopping me.
Not sure if it's the same one, bc the one I played there was more than dirty, it was actually a little beatup, but restorable.. Merlin hole was struggling, areas in front of castle beatup, etc. But I talked to the operator of it in 2003, back when decent MM's were going like $4k. He told me he'd had offers of $5k (at that time, for that machine, total bs!) but I offered him $3k, and he wasn't interested. This was about a year and a half before the insanely mint Treasure Cove MM shocked everyone by going for $7k and began a MM price staircase that hasn't really stopped.
But yeah, I'm sure he's had so many calls over the years that he actually overvalues it now, if he still has it.