I think having 0 feedback might be part of your problem. Plus no pictures and no real specific details on the Xbox. (When it was manufactured, type of drive, etc.) But I think plenty of people put their Xbox up without those details.
$170 w/ free shipping does seem like a pretty good deal. Maybe you should consider simply splitting the stuff up.
You can get $40 (at least I'd think, probably more) for Marvel, $20 (not sure?) for Fatal Frame + shipping on both, so you'd end up with $65-$70 at least (before fees) -- though with such low feedback you might get less --just on the games and then you can list the Xbox and let peple bid it up, plus just charge a fair S&H.
That's what I'd do if I really needed to sell the stuff. But I'd also try to build up 10 or more feedbacks before selling something for over $100.