I have an empty Dynamo cabinet for sale in Omaha, NE.  It used to be my MAME cab, but I found a different cab that matched the theme of my arcade better, so i'm swapping it out.  
It's a really sturdy cab, made of thick MDF.  It has the over/under coin door plus all the coin mechs.  It also has the monitor glass which I had made as well as a bezel I made.  Has new yellow t-molding.  I also have the plexi for the marquee (not pictured).  It will easily fit a 20'' monitor/TV, but will stick out of the back some.  I have the backdoor for this too.  I also have wheels on it, but the cab might be too heavy for them, they don't roll very well.
Looking to get $50.00 for it (which is what I paid for the original cab before I added all the extras to it and cleaned it).  If I don't sell this after a while, if any nonlocals want to buy the coin door, I'd be willing to sell that seperately.