I think you’re coming in about $600-800 too high. People don’t pay for mods that much, although TRON is probably the most modded title. I’m not a mod guy, the only must have mod for this one is the arcade cabinet upgrade for above the scoop.
If they do remake them, they’ll likely list at spider man remake prices, so $6000-$6500 vs street price of regular pro at $5600. I think if you priced this at $6800 it would be gone and $7000 it might take a few days
I bought NIB a pro on the third run and paid $5k shipped. I sold it bone stock minus some Cliffys for $5500 2 years later. It would probably fetch $6k in the same condition now