I got a Data East RoboCop/Bad Dudes Cabinet that had been converted to a SFII for $100.00. It came with a working monitor, 2 joysticks, 14 buttons, jamma harness, power supply, coin door, etc. Only thing missing was the PCB.
I then got a generic Dynamo cabinet that had been a Final Fight for a kickass $35.00 and 8 DVD's. That came with a monitor, 2 joysticks, 8 buttons, jamma harness, etc.