Not easily or likely through ebay, but yes you can get them for $60 or a little less, loose carts (MVS) and not in like dead mint (but also not banged up either) shape. You go through ebay you'll get likely screwed closer to $100 than $50. But going through private forums, facebook, local, it's very possible.
I really don't care about nitpicking completionists and their wording of things, you should know that Joe. So fed up with how far home console and to a lesser extent handheld gaming has slid into a cash game per any item down to baggies and foam so I more or less walked from it and went this direction instead.
I said complete kit contents in a shockbox, not a complete kit, which is true as it's the dip sheet, mini marquee, and the 2 art cards along with the game.
I only have 2 true full kits, 8man and Neo Turf Masters.