I'm pretty sure I know what he means. He is selling the Xarcade wooden box, the xarcade buttons and the xarcade joysticks.
He is NOT including the controller/encoder/interface/etc, the wiring, or the microswitches. So to use what he is selling, you'd need to purchase some sort of encoder, wire it, and install new microswitches.
To the original poster, just an FYI, redoctane and others sell premade panels for 20 bux or so (i remember seeing a 2p panel for 30 somewhere), and an xarcade barely has $30-40 worth of controls in it including the wiring and micros. Not to mention, they are known to be of a lesser quality compared to many other arcade companies.
This is not meant as an insult, I'm only trying to help. I just think it may be tough to sell this to the people on this board for what you are asking since they are damn knowledgeable heh.