Looks shady to me..
"Includes Cabinet, X-Arcade, Adapters For PC And Every Game Console
Game Systems And TV Are Not Included!"
Never buy anything from someone with bad grammar. 
It's a new line in a "title" type, which 
usually is the same as a period: "Includes Cabinet, X-Arcade, Adapters For PC And Every Game Console.  Game Systems And TV Are Not Included!"  (Only the "!" is ill-placed for good 
PR, but it may be an intentional emphasis of no TV, no Xbox and no Gcube are included.)  But you're right, it might be a good idea to check that.
Says shipping is included, which is, what, $50-$100?  Sounds like a decent price to me.
Not going to get one, though.  I'll make be own, thank you.  But it's good to see "arcade" cabs at semi-decent prices out there.