Thats an easy one . . . Dion always said it would cost $359, so that would be the FREAKED NitD cart. My advice, pick up the MVS version which is now under 250 complete with original artwork, put the cart in one of Big Bear's awesome new red MVS/Home cases (at only $10), and voila, you have a great quality NitD cart for only about $260 or less! And by now, everyone should have the !arcade! MVS adapter, so no need to have any precious carts sacced to make the NitD home cart. I should know, I have NitD MVS and the adapter, and they work together perfectly . . . plus, NitD is too freakin' easy, really not a challenge at all . . . not worth $359 for sure.
Sengoku 3 may be another matter, for that cart I'll be interested in a home version if it becomes available, but not with the ugly NGF URL on the back . . . hopefully, someone else will have the cart produced, so we can all actually BUY it!!!