That game looks VERY clean. I'd almost say that I'd rather buy one that hasn't been upgraded since most technician "upgrades" are questionable workmanship. The real determination of value is whether it's an Amplifone monitor or a WG6100. If it's the Amplifone, I thinks that's a $2500+ game whether it's been upgraded or not. Even with a WG monitor, you would have no problem selling that machine for nearly $2000.

Rebuild the monitor and A/R board and install the ESB upgrade and you'll have a REALLY nice example of a desirable game.