You're looking in the wrong places, there a MK cab complete (just missing the game PCB) for $25 in CT right now, also there's a guy in Holyoke with a few 25" dynamos and similar cabs with monitors in the $100-$200 range.Around here 150$ isn't going to get you a cab with a monitor.
You might find the body/coin door/control panel for that.
if OP is patient and willing to move when the deal arrives I'm sure he'd be able to secure a decent cab in his price range.