$25?!?
Buy that thing.
At worst you put a couple hundred into it with restoration and the multi kit. Then flip it for $800-$900. The multi runs Burgertime. Everyone loves Burgertime.
Also...There are the 5 minute load times from the cassettes. It was an okay idea when it was new but proved to be a nightmare to keep running. Keep the cassette kits for novelty purposes and get the kit.
I cannot stress this enough....
Buy the Darksoft kit while you can. Don't do what most of us did years ago with the Widel kit...and wait. He didn't make more and vanished. Get this kit while it's available...
There are 2 ram chips on the cpu board which fail on a lot of them and cause the game to fail the self test and display nothing or garbage. Boot the game in test mode, occasionally that will display a rom or ram issue of it finds it in the check it runs.
Anyone ever see one do this? I found a bad rom on the video board, replaced it and it's less ugly. Swapped z80s, same result. Swapped ribbon cables, same deal. Tried the Braze kit to look for ram issues, same. Voltages are good, I have another that works in the cabinet and with the Braze kit.