Its a tough machine to support, there isn't much demand. Its not a top tier or even second tier game. Still fun and underrated. If only we could convince Pinball Arcade to make a digital version, then the value would tip in our favor.
I only paid $150 for my jokers, it started up, seemed to be complete, but had an error, indicating the battery. After replacing the battery holder entirely, still no go, so more work needs to be done. However while cleaning up the playfield I found that all of the flashers were missing sockets and wires, one plug on my interconnect board has all of its wires cut, and some janky wires running from the powersupply and one of the main boards. I suspect the interconnect board started to fail, and some clown made some 'refinements' to keep the machine playable.
I'd be happy to have a playable machine with some LED's, so that's what i'm shooting for. Not a full resto, but its in nice shape, so won't be hard to keep it presentable enough to drag to shows.
Good luck on your own.
JR