The funny thing is that these have been going pretty cheap on eBay, almost like the demand is dropping off for them.
Of course these are used, but I picked up a pair with a working jamma board for $35, and then I picked up another spare (working) for $9.99 on a different auction where I was the only bidder. Then I got two more on my Guerrilla War that I paid $20 for the entire cab (all controls included). I guess this is why people part these things out.